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/mainboard/emulation/qemu-i440fx/memory.c

@@ -45,12 +45,7 @@ unsigned long get_top_of_ram(void)
 	return qemu_get_memory_size() * 1024;
 }
 
-#if !CONFIG_DYNAMIC_CBMEM
-struct cbmem_entry *get_cbmem_toc(void)
-{
-	return (struct cbmem_entry *)(get_top_of_ram() - HIGH_MEMORY_SIZE);
-}
-#else
+#if CONFIG_DYNAMIC_CBMEM
 void *cbmem_top(void)
 {
 	/* Top of cbmem is at lowest usable DRAM address below 4GiB. */