Add gsm decoder to media codec list

b/6620569

Change-Id: I8887adf11d616e5ab4d2f5d69efff124b3a9a0dc
diff --git a/media_codecs.xml b/media_codecs.xml
index 8cfbff4..d6af940 100644
--- a/media_codecs.xml
+++ b/media_codecs.xml
@@ -90,6 +90,7 @@
         <MediaCodec name="OMX.google.g711.alaw.decoder" type="audio/g711-alaw" />
         <MediaCodec name="OMX.google.g711.mlaw.decoder" type="audio/g711-mlaw" />
         <MediaCodec name="OMX.google.vorbis.decoder" type="audio/vorbis" />
+        <MediaCodec name="OMX.google.gsm.decoder" type="audio/gsm" />
 
         <MediaCodec name="OMX.google.mpeg4.decoder" type="video/mp4v-es" />
         <MediaCodec name="OMX.google.h263.decoder" type="video/3gpp" />