cbmem: add reference code ids

In order to identify the ram used in cbmem for
reference code blobs add common ids to be consumed
by downstream users.

BUG=chrome-os-partner:22866
BRANCH=None
TEST=Built and booted with ref code support. Noted reference
     code entries in cbmem.

Change-Id: Iae3f0c2c1ffdb2eb0e82a52ee459d25db44c1904
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/174424
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/4896
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

src/lib/cbmem_info.c

@@ -49,6 +49,8 @@ static struct cbmem_id_to_name {
 	{ CBMEM_ID_CAR_GLOBALS,		"CAR GLOBALS" },
 	{ CBMEM_ID_AGESA_RUNTIME,	"AGESA RSVD " },
 	{ CBMEM_ID_EHCI_DEBUG,	"USBDEBUG   " },
+	{ CBMEM_ID_REFCODE,		"REFCODE    " },
+	{ CBMEM_ID_REFCODE_CACHE,	"REFCODE $  " },
 };
 
 void cbmem_print_entry(int n, u32 id, u64 base, u64 size)