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>
diff --git a/src/include/cbmem.h b/src/include/cbmem.h
index 9e894a9..9e68ba9 100644
--- a/src/include/cbmem.h
+++ b/src/include/cbmem.h
@@ -59,6 +59,8 @@
 #define CBMEM_ID_VBOOT_HANDOFF	0x780074f0
 #define CBMEM_ID_CAR_GLOBALS	0xcac4e6a3
 #define CBMEM_ID_EHCI_DEBUG	0xe4c1deb9
+#define CBMEM_ID_REFCODE	0x04efc0de
+#define CBMEM_ID_REFCODE_CACHE	0x4efc0de5
 #define CBMEM_ID_NONE		0x00000000
 #define CBMEM_ID_AGESA_RUNTIME	0x41474553
 #define CBMEM_ID_HOB_POINTER		0x484f4221