NuPlayer: Add audio sink buffer configuration

Property media.stagefright.audio.sink (in milliseconds)
Also change the default buffer size for PCM playback to 500 ms.

Bug: 21198655
Change-Id: I5781288f59bf08fbecd9263a26c919570b58be0f
diff --git a/media/libmediaplayerservice/MediaPlayerService.h b/media/libmediaplayerservice/MediaPlayerService.h
index e9f72b8..7527506 100644
--- a/media/libmediaplayerservice/MediaPlayerService.h
+++ b/media/libmediaplayerservice/MediaPlayerService.h
@@ -98,7 +98,8 @@
                 AudioCallback cb, void *cookie,
                 audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE,
                 const audio_offload_info_t *offloadInfo = NULL,
-                bool doNotReconnect = false);
+                bool doNotReconnect = false,
+                uint32_t suggestedFrameCount = 0);
 
         virtual status_t        start();
         virtual ssize_t         write(const void* buffer, size_t size, bool blocking = true);