Recognize yuv10 image files as v210x.

Reviewed-by: Kieran Kunhya

libavformat/img2.c

@@ -72,6 +72,7 @@ static const IdStrMap img_tags[] = {
     { CODEC_ID_DPX       , "dpx"},
     { CODEC_ID_EXR       , "exr"},
     { CODEC_ID_PICTOR    , "pic"},
+    { CODEC_ID_V210X     , "yuv10"},
     { CODEC_ID_XBM       , "xbm"},
     { CODEC_ID_XWD       , "xwd"},
     { CODEC_ID_NONE      , NULL}