video: driver: fix invalid output buffer tag receipt in fence usecase

When fence is enabled, output buffer tag is sent to fw via
output metadata buffer. Since fw relies on bytesused field of
output metadata buffer to invalidate cache and perform read operation,
output metadata buffer's filled length cannot be zero.
Hence set valid size for bytesused field to fix this issue.

Change-Id: I7bd87ec49508402d2d654095f06e75992771c39d
Signed-off-by: Akshata Sahukar <quic_asahukar@quicinc.com>

driver/platform/kalama/src/msm_vidc_kalama.c

@@ -1327,8 +1327,7 @@ static struct msm_platform_inst_capability instance_cap_data_kalama[] = {
 		0,
 		HFI_PROP_PIPE},
 
-	{POC, DEC, H264,
-		0, 18, 1, 1,
+	{POC, DEC, H264, 0, 2, 1, 1,
 		0,
 		HFI_PROP_PIC_ORDER_CNT_TYPE},