tpm: Move the LPC TPM driver to a subdirectory

This moves the LPC TPM driver to drivers/pc80/tpm so it can
be turned into a ramstage driver with a chip.h

It includes no other changes yet.

BUG=chrome-os-partner:33385
BRANCH=samus,auron
TEST=emerge-samus coreboot

Change-Id: I60ddd1d2a3e72bcf169a0b44e0c7ebcb87f4617d
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/226660
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/drivers/pc80/Kconfig

@@ -15,14 +15,6 @@ config DRIVERS_PS2_KEYBOARD
 	  this option, then you can say N here to speed up boot time.
 	  Otherwise say Y.
 
-config LPC_TPM
-	bool
-	default n
-	help
-	  Enable this option to enable TPM support in coreboot.
-
-	  If unsure, say N.
-
 config DRIVERS_MC146818_RTC
 	bool
 	default y if ARCH_X86
@@ -37,3 +29,5 @@ config DRIVERS_RTC_HAS_ALTCENTURY
 	bool "The RTC supports alt century"
 	depends on DRIVERS_MC146818_RTC
 	default y
+
+source src/drivers/pc80/tpm/Kconfig

src/drivers/pc80/Makefile.inc

@@ -6,12 +6,11 @@ ramstage-y += i8259.c
 ramstage-$(CONFIG_UDELAY_IO) += udelay_io.c
 ramstage-y += keyboard.c
 
-romstage-$(CONFIG_LPC_TPM) += tpm.c
 ifeq ($(CONFIG_DRIVERS_MC146818_CMOS),y)
 romstage-$(CONFIG_USE_OPTION_TABLE) += mc146818rtc_early.c
 endif
 
-subdirs-y += vga
+subdirs-y += tpm vga
 
 cbfs-files-$(CONFIG_HAVE_CMOS_DEFAULT) += cmos.default
 cmos.default-file = $(CONFIG_CMOS_DEFAULT_FILE):nvramtool

src/drivers/pc80/tpm/Kconfig

@@ -0,0 +1,7 @@
+config LPC_TPM
+	bool
+	default n
+	help
+	  Enable this option to enable LPC TPM support in coreboot.
+
+	  If unsure, say N.

src/drivers/pc80/tpm/Makefile.inc

@@ -0,0 +1 @@
+romstage-$(CONFIG_LPC_TPM) += tpm.c