Remove AudioFlinger dependencies on client

Change-Id: Ibb591e41a3ca5d7015e2b66b98b8fef5f415fb37
diff --git a/include/media/AudioTrack.h b/include/media/AudioTrack.h
index fe91799..98abfbd 100644
--- a/include/media/AudioTrack.h
+++ b/include/media/AudioTrack.h
@@ -411,7 +411,7 @@
      */
 
         enum {
-            NO_MORE_BUFFERS = 0x80000001,
+            NO_MORE_BUFFERS = 0x80000001,   // same name in AudioFlinger.h, ok to be different value
             STOPPED = 1
         };