Add gsm decoder to media codec list

b/6620569

Change-Id: I9c41bd34e931bb59405146931dfc12a00a423ef5
diff --git a/tools/emulator/system/camera/media_codecs.xml b/tools/emulator/system/camera/media_codecs.xml
index dcd8ce1..a3f19d2 100644
--- a/tools/emulator/system/camera/media_codecs.xml
+++ b/tools/emulator/system/camera/media_codecs.xml
@@ -84,6 +84,7 @@
         <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" />