payload: armv7: Fix dcache_clean_by_mva.

The OP assigned by dcache_clean_by_mva must be handled in
dcache_op_mva.

BUG=none
TEST=emerge-peach_pit libpayload
BRANCH=none

Change-Id: Ib32262f0419453b2690d7c1a1c6602380b46a37f
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/61077
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>

payloads/libpayload/arch/armv7/cache.c

@@ -217,6 +217,9 @@ static void dcache_op_mva(unsigned long addr,
 		case OP_DCCIMVAC:
 			dccimvac(line);
 			break;
+		case OP_DCCMVAC:
+			dccmvac(line);
+			break;
 		default:
 			break;
 		}