SoftVorbis: Set the right encoding in the port definition

Previously, it set the encoding type to AAC, which is just a typo.

Change-Id: I2dcae1f579e9feb0b35b6f5d334028c534275042

media/libstagefright/codecs/vorbis/dec/SoftVorbis.cpp

@@ -93,7 +93,7 @@ void SoftVorbis::initPorts() {
 
     def.format.audio.pNativeRender = NULL;
     def.format.audio.bFlagErrorConcealment = OMX_FALSE;
-    def.format.audio.eEncoding = OMX_AUDIO_CodingAAC;
+    def.format.audio.eEncoding = OMX_AUDIO_CodingVORBIS;
 
     addPort(def);