util/cbmem: Print name instead of ID of CBMEM_ID_SMM_SAVE_SPACE

Commit b4b9eb39 (x86: provide infrastructure to backup default SMM
region) introduced the new CBMEM type `CBMEM_ID_SMM_SAVE_SPACE`, but
did not add its name `SMM BACKUP` to the utility `cbmem`, causing the
following output, when running `cbmem` on a system making
use of `BACKUP_DEFAULT_SMM_REGION`.

	 7. 07e9acee   7f7e5000   00010000

Fix that by adding the name `SMM BACKUP` to the struct
`cbmem_id_to_name`.

Change-Id: Ib24088c07af4daf6b7d8d5854283b5faa2ad6503
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: http://review.coreboot.org/7176
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
diff --git a/util/cbmem/cbmem.c b/util/cbmem/cbmem.c
index f1de620..999135f 100644
--- a/util/cbmem/cbmem.c
+++ b/util/cbmem/cbmem.c
@@ -614,6 +614,7 @@
 	{ CBMEM_ID_ROOT,		"CBMEM ROOT " },
 	{ CBMEM_ID_VBOOT_HANDOFF,	"VBOOT      " },
 	{ CBMEM_ID_CAR_GLOBALS,		"CAR GLOBALS" },
+	{ CBMEM_ID_SMM_SAVE_SPACE,	"SMM BACKUP " },
 };
 
 void cbmem_print_entry(int n, uint32_t id, uint64_t base, uint64_t size)