lavc: AV-prefix all codec capabilities

Express bitfields more simply.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

libavcodec/zerocodec.c

@@ -150,5 +150,5 @@ AVCodec ff_zerocodec_decoder = {
     .init           = zerocodec_decode_init,
     .decode         = zerocodec_decode_frame,
     .close          = zerocodec_decode_close,
-    .capabilities   = CODEC_CAP_DR1,
+    .capabilities   = AV_CODEC_CAP_DR1,
 };