video: driver: Add new metadata payload header flags

Add new metadata payload header flags to specify a particular
metadata is bitstream buffer oriented or raw buffer oriented.
This is required specially in decoder fence case where input
metadata done buffer will contain both input(bitstream)
buffer tag as well as output(raw) buffer tag.

Change-Id: I43c201c67639d8ab761971f2bc38fe9ec3e80b5f
Signed-off-by: Akshata Sahukar <[email protected]>

include/uapi/vidc/media/v4l2_vidc_extensions.h

@@ -393,6 +393,8 @@ enum v4l2_mpeg_vidc_metapayload_header_flags {
 	METADATA_FLAGS_NONE             = 0,
 	METADATA_FLAGS_TOP_FIELD        = (1 << 0),
 	METADATA_FLAGS_BOTTOM_FIELD     = (1 << 1),
+	METADATA_FLAGS_BITSTREAM        = (1 << 2),
+	METADATA_FLAGS_RAW              = (1 << 3),
 };
 
 enum saliency_roi_info {