video: driver: handle dequeued buffers at once

Firmware returns meta buffer after actual buffer but
client needs meta buffer before actual buffer. Handle
the case using MSM_VIDC_ATTR_DEQUEUED flag.

Change-Id: I99048a2f110a1b14bc4bb140b6211afa340c9f38
Signed-off-by: Maheshwar Ajja <majja@codeaurora.org>

driver/vidc/inc/msm_vidc_internal.h

@@ -151,6 +151,7 @@ enum msm_vidc_buffer_attributes {
 	MSM_VIDC_ATTR_READ_ONLY                 = BIT(1),
 	MSM_VIDC_ATTR_PENDING_RELEASE           = BIT(2),
 	MSM_VIDC_ATTR_QUEUED                    = BIT(3),
+	MSM_VIDC_ATTR_DEQUEUED                  = BIT(4),
 };
 
 enum msm_vidc_buffer_region {