update for new audio.h header location

Change-Id: Ic4c62c4037800802427eb7d3c7f5eb8b25d18876
Signed-off-by: Dima Zavin <dima@android.com>
diff --git a/media/libmediaplayerservice/MidiFile.cpp b/media/libmediaplayerservice/MidiFile.cpp
index 37a3db3..589c625 100644
--- a/media/libmediaplayerservice/MidiFile.cpp
+++ b/media/libmediaplayerservice/MidiFile.cpp
@@ -30,7 +30,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 
-#include <hardware/audio.h>
+#include <system/audio.h>
 
 #include "MidiFile.h"