audio: update for audio/audio_policy header names/locations

Change-Id: I36c49352eee57559403cd1597f56a8485a360289
Signed-off-by: Dima Zavin <dima@android.com>
diff --git a/include/media/IAudioPolicyService.h b/include/media/IAudioPolicyService.h
index 09b2bfe..0fc8dbf 100644
--- a/include/media/IAudioPolicyService.h
+++ b/include/media/IAudioPolicyService.h
@@ -26,7 +26,7 @@
 #include <binder/IInterface.h>
 #include <media/AudioSystem.h>
 
-#include <hardware/audio_policy.h>
+#include <system/audio_policy.h>
 
 namespace android {