Remove assembly coded log2 function

As we move to supporting other systems we need to get rid of assembly
where we can. The log2 function in src/lib is identical to the assembly
one (tested for all 32-bit signed integers :-) and takes about 10 ns
to run as opposed to 5ns for the non-portable assembly version. While speed
is good, I think we can spare the 15 ns or so we add to boot time
by using the C version only.

Change-Id: Icafa565eae282c85fa5fc01b3bd1f110cd9aaa91
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: http://review.coreboot.org/1928
Tested-by: build bot (Jenkins)

src/superio/nsc/pc8374/superio.c

@@ -24,7 +24,6 @@
 #include <device/pnp.h>
 #include <console/console.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include <stdlib.h>

src/superio/nsc/pc87351/superio.c

@@ -24,7 +24,6 @@
 #include <device/pnp.h>
 #include <console/console.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include <stdlib.h>

src/superio/nsc/pc87360/superio.c

@@ -24,7 +24,6 @@
 #include <device/pnp.h>
 #include <console/console.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include <stdlib.h>

src/superio/nsc/pc87366/superio.c

@@ -24,7 +24,6 @@
 #include <device/pnp.h>
 #include <console/console.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include <stdlib.h>

src/superio/nsc/pc87382/superio.c

@@ -23,7 +23,6 @@
 #include <device/pnp.h>
 #include <console/console.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include <stdlib.h>

src/superio/nsc/pc87384/superio.c

@@ -23,7 +23,6 @@
 #include <device/pnp.h>
 #include <console/console.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include <stdlib.h>

src/superio/nsc/pc87392/superio.c

@@ -23,7 +23,6 @@
 #include <device/pnp.h>
 #include <console/console.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <stdlib.h>
 #include "pc87392.h"

src/superio/nsc/pc87417/superio.c

@@ -25,7 +25,6 @@
 #include <device/pnp.h>
 #include <console/console.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include <stdlib.h>

src/superio/nsc/pc87427/superio.c

@@ -24,7 +24,6 @@
 #include <device/pnp.h>
 #include <console/console.h>
 #include <string.h>
-#include <bitops.h>
 #include <stdlib.h>
 #include "chip.h"
 #include "pc87427.h"

src/superio/nuvoton/wpcm450/superio.c

@@ -23,7 +23,6 @@
 #include <device/pnp.h>
 #include <console/console.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include <stdlib.h>

src/superio/renesas/m3885x/superio.c

@@ -23,7 +23,6 @@
 #include <console/console.h>
 #include <device/smbus.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <assert.h>
 #include <stdlib.h>

src/superio/smsc/kbc1100/superio.c

@@ -25,7 +25,6 @@
 #include <console/console.h>
 #include <device/smbus.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include <stdlib.h>

src/superio/smsc/lpc47b272/superio.c

@@ -29,7 +29,6 @@
 #include <console/console.h>
 #include <device/smbus.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include <stdlib.h>

src/superio/smsc/lpc47b397/superio.c

@@ -26,7 +26,6 @@
 #include <console/console.h>
 #include <device/smbus.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include <stdlib.h>

src/superio/smsc/lpc47m10x/superio.c

@@ -28,7 +28,6 @@
 #include <console/console.h>
 #include <device/smbus.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include <stdlib.h>

src/superio/smsc/lpc47m15x/superio.c

@@ -25,7 +25,6 @@
 #include <console/console.h>
 #include <device/smbus.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include <stdlib.h>

src/superio/smsc/lpc47n217/superio.c

@@ -29,7 +29,6 @@
 #include <console/console.h>
 #include <device/smbus.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <assert.h>
 #include <stdlib.h>

src/superio/smsc/lpc47n227/superio.c

@@ -26,7 +26,6 @@
 #include <console/console.h>
 #include <device/smbus.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <assert.h>
 #include <stdlib.h>

src/superio/smsc/mec1308/superio.c

@@ -25,7 +25,6 @@
 #include <console/console.h>
 #include <device/smbus.h>
 #include <string.h>
-#include <bitops.h>
 #include <pc80/keyboard.h>
 #include <stdlib.h>
 #include "chip.h"

src/superio/smsc/sch4037/superio.c

@@ -25,7 +25,6 @@
 #include <console/console.h>
 #include <device/smbus.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include <stdlib.h>

src/superio/smsc/sio1036/superio.c

@@ -25,7 +25,6 @@
 #include <console/console.h>
 #include <device/smbus.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include <stdlib.h>

src/superio/winbond/w83627ehg/superio.c

@@ -26,7 +26,6 @@
 #include <device/pnp.h>
 #include <console/console.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include <pc80/mc146818rtc.h>

src/superio/winbond/w83627hf/superio.c

@@ -26,7 +26,6 @@
 #include <device/pnp.h>
 #include <console/console.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include <pc80/mc146818rtc.h>

src/superio/winbond/w83627thg/superio.c

@@ -25,7 +25,6 @@
 #include <device/pnp.h>
 #include <console/console.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include "chip.h"

src/superio/winbond/w83627uhg/superio.c

@@ -25,7 +25,6 @@
 #include <string.h>
 #include <stdint.h>
 #include <stdlib.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include "chip.h"

src/superio/winbond/w83697hf/superio.c

@@ -23,7 +23,7 @@
 #include <device/pnp.h>
 #include <console/console.h>
 #include <string.h>
-#include <bitops.h>
+#include <lib.h>
 #include <uart8250.h>
 #include <pc80/mc146818rtc.h>
 #include <stdlib.h>

src/superio/winbond/w83977f/superio.c

@@ -23,7 +23,6 @@
 #include <device/pnp.h>
 #include <console/console.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include <stdlib.h>

src/superio/winbond/w83977tf/superio.c

@@ -25,7 +25,6 @@
 #include <device/pnp.h>
 #include <console/console.h>
 #include <string.h>
-#include <bitops.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include <stdlib.h>