cbfs: correct types used for accessing files

In commit 72a8e5e751 the
Makefile's were updated to use named types for cbfs
file addition. However, the call sites were not checked to
ensure the types matched. Correct all call sites to use the
named types.

Change-Id: Ib9fa693ef517e3196a3f04e9c06db52a9116fee7
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/9195
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>

src/northbridge/intel/sandybridge/mrccache.c

@@ -71,7 +71,9 @@ static u32 get_mrc_cache_region(struct mrc_data_container **mrc_region_ptr)
 #else
 	size_t region_size;
 	*mrc_region_ptr = cbfs_get_file_content(CBFS_DEFAULT_MEDIA,
-						"mrc.cache", 0xac, &region_size);
+						"mrc.cache",
+						CBFS_TYPE_MRC_CACHE,
+						&region_size);
 	return region_size;
 #endif