adds missing rgb/bgr 565 codec->fmt mappings, ok'ed by Michael

Originally committed as revision 6807 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/raw.c

@@ -54,6 +54,8 @@ const PixelFormatTag pixelFormatTags[] = {
     { PIX_FMT_GRAY8,   MKTAG('G', 'R', 'E', 'Y') },
     { PIX_FMT_RGB555,  MKTAG('R', 'G', 'B', 15) },
     { PIX_FMT_BGR555,  MKTAG('B', 'G', 'R', 15) },
+    { PIX_FMT_RGB565,  MKTAG('R', 'G', 'B', 16) },
+    { PIX_FMT_BGR565,  MKTAG('B', 'G', 'R', 16) },
 
     /* quicktime */
     { PIX_FMT_UYVY422, MKTAG('2', 'v', 'u', 'y') },