Remove chip.h files without config structure

Also deletes files not included in build:
    src/southbridge/amd/cimx/sb700/chip_name.c
    src/southbridge/amd/cimx/sb800/chip_name.c
    src/southbridge/amd/cimx/sb900/chip_name.c

Change-Id: I2068e3859157b758ccea0ca91fa47d09a8639361
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/1473
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Marc Jones <marcj303@gmail.com>

src/drivers/generic/debug/chip.h

@@ -1,2 +0,0 @@
-struct drivers_generic_debug_config {
-};

src/drivers/generic/debug/debug_dev.c

@@ -7,7 +7,6 @@
 #include <cpu/x86/msr.h>
 #include <reset.h>
 #include <delay.h>
-#include "chip.h"
 
 static void print_pci_regs(struct device *dev)
 {