CBMEM x86: Unify get_cbmem_toc()

Remove any chipset-specific implementations and use arch-specific
implementation of get_cbmem_table() instead.

Change-Id: I338ee2c1bd51f5e517462115170dc926e040159e
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/3907
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>

src/northbridge/intel/i945/raminit.c

@@ -28,11 +28,6 @@
 #include "i945.h"
 #include <cbmem.h>
 
-struct cbmem_entry *get_cbmem_toc(void)
-{
-	return (struct cbmem_entry *)(get_top_of_ram() - HIGH_MEMORY_SIZE);
-}
-
 /* Debugging macros. */
 #if CONFIG_DEBUG_RAM_SETUP
 #define PRINTK_DEBUG(x...)	printk(BIOS_DEBUG, x)