avformat/riff: add M101

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavformat/riff.c

@@ -419,6 +419,8 @@ const AVCodecTag ff_codec_bmp_tags[] = {
     { AV_CODEC_ID_RSCC,         MKTAG('R', 'S', 'C', 'C') },
     { AV_CODEC_ID_RSCC,         MKTAG('I', 'S', 'C', 'C') },
     { AV_CODEC_ID_CFHD,         MKTAG('C', 'F', 'H', 'D') },
+    { AV_CODEC_ID_M101,         MKTAG('M', '1', '0', '1') },
+
     { AV_CODEC_ID_NONE,         0 }
 };