Add intDef for the return value of AvSettings.getAudio/VideoStreamType

Test: make -j44 dist
Bug: 171770836
Change-Id: Idc85934201e91808419fee550e45db066ea49f51

media/java/android/media/tv/tuner/filter/AvSettings.java

@@ -199,6 +199,7 @@ public class AvSettings extends Settings {
     /**
      * Get the Audio Stream Type.
      */
+    @AudioStreamType
     public int getAudioStreamType() {
         return mAudioStreamType;
     }
@@ -206,6 +207,7 @@ public class AvSettings extends Settings {
     /**
      * Get the Video Stream Type.
      */
+    @VideoStreamType
     public int getVideoStreamType() {
         return mVideoStreamType;
     }