Revert "Partly revert f174fbac: indeo3 decoder does not support direct rendering."

f174fbac did not introduce DR1 flag it was already available before that.

This reverts commit 8bf44d5c.

libavcodec/indeo3.c

@@ -1142,4 +1142,5 @@ AVCodec ff_indeo3_decoder = {
     .close          = decode_close,
     .decode         = decode_frame,
     .long_name      = NULL_IF_CONFIG_SMALL("Intel Indeo 3"),
+    .capabilities   = CODEC_CAP_DR1,
 };