Use audio_policy_output_flags_t consistently

This affects:
 - IAudioFlinger::openOutput
 - AudioTrack::AudioTrack
 - AudioTrack::set
 - apps that call these

Change-Id: I26fb281bac6cb87593d17697bc9cb37a835af205
diff --git a/media/libmedia/JetPlayer.cpp b/media/libmedia/JetPlayer.cpp
index 6cb5b82..a85956c 100644
--- a/media/libmedia/JetPlayer.cpp
+++ b/media/libmedia/JetPlayer.cpp
@@ -94,7 +94,7 @@
             AUDIO_FORMAT_PCM_16_BIT,
             (pLibConfig->numChannels == 2) ? AUDIO_CHANNEL_OUT_STEREO : AUDIO_CHANNEL_OUT_MONO,
             mTrackBufferSize,
-            0);
+            AUDIO_POLICY_OUTPUT_FLAG_NONE);
 
     // create render and playback thread
     {