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/lib/cbmem.c

@@ -71,7 +71,7 @@ static void cbmem_locate_table(uint64_t *base, uint64_t *size)
 #endif
 }
 
-struct cbmem_entry *__attribute__((weak)) get_cbmem_toc(void)
+struct cbmem_entry *get_cbmem_toc(void)
 {
 	uint64_t base, size;
 	cbmem_locate_table(&base, &size);