RecordTrack::createRecordTrack_l flags are in/out

The flags are currently unused, but will be used for requesting a fast
track.  Making flags in/out will allow reporting back up to client that
the request is denied.

Change-Id: Ifbee57da3632ce130551065a426577fb97b1a68d
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index f0c27c3..305270a 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -4433,7 +4433,7 @@
         audio_channel_mask_t channelMask,
         size_t frameCount,
         int sessionId,
-        IAudioFlinger::track_flags_t flags,
+        IAudioFlinger::track_flags_t *flags,
         pid_t tid,
         status_t *status)
 {