lavc: AV-prefix all codec capabilities

Express bitfields more simply.

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

libavcodec/aliaspixdec.c

@@ -124,5 +124,5 @@ AVCodec ff_alias_pix_decoder = {
     .type         = AVMEDIA_TYPE_VIDEO,
     .id           = AV_CODEC_ID_ALIAS_PIX,
     .decode       = decode_frame,
-    .capabilities = CODEC_CAP_DR1,
+    .capabilities = AV_CODEC_CAP_DR1,
 };