XMA1 and XMA2 stereo decoders

Signed-off-by: Paul B Mahol <onemda@gmail.com>

libavcodec/allcodecs.c

@@ -445,6 +445,8 @@ void avcodec_register_all(void)
     REGISTER_ENCDEC (WMAV2,             wmav2);
     REGISTER_DECODER(WMAVOICE,          wmavoice);
     REGISTER_DECODER(WS_SND1,           ws_snd1);
+    REGISTER_DECODER(XMA1,              xma1);
+    REGISTER_DECODER(XMA2,              xma2);
 
     /* PCM codecs */
     REGISTER_ENCDEC (PCM_ALAW,          pcm_alaw);