video-driver: add to support DolbyVision metadata

1. add DolbyVision metadata cap and V4L2 id;
2. Increase decoder persist buffer size;
3. Increase decoder output meta buffer size;
4. Increase encoder input meta buffer size;
5. Parse buffer overflow flag and set buffer flag
   accordingly;

Change-Id: I8fa5e89068dd479033d28f627e585edc3a1c58bb
Signed-off-by: Zhongbo Shi <quic_zhongbos@quicinc.com>

driver/vidc/inc/hfi_property.h

@@ -563,6 +563,8 @@ enum hfi_saliency_type {
 
 #define HFI_PROP_TRANSCODING_STAT_INFO                          0x03000191
 
+#define HFI_PROP_DOLBY_RPU_METADATA                             0x03000192
+
 #define HFI_PROP_END                                            0x03FFFFFF
 
 #define HFI_SESSION_ERROR_BEGIN                                 0x04000000