update for new audio.h header location

Change-Id: Ic4c62c4037800802427eb7d3c7f5eb8b25d18876
Signed-off-by: Dima Zavin <dima@android.com>
diff --git a/core/jni/android_media_AudioTrack.cpp b/core/jni/android_media_AudioTrack.cpp
index e3b2f2c..bd70dad 100644
--- a/core/jni/android_media_AudioTrack.cpp
+++ b/core/jni/android_media_AudioTrack.cpp
@@ -35,7 +35,7 @@
 
 #include <cutils/bitops.h>
 
-#include <hardware/audio.h>
+#include <system/audio.h>
 
 // ----------------------------------------------------------------------------