hardware: drop the _hal suffixes from audio.h and audio_policy.h

Change-Id: Ib9bfc4049cf350f72af3ee577ce4756ac4118cfc
Signed-off-by: Dima Zavin <dima@android.com>
diff --git a/modules/audio/audio_hw.c b/modules/audio/audio_hw.c
index b3ab1e2..223e661 100644
--- a/modules/audio/audio_hw.c
+++ b/modules/audio/audio_hw.c
@@ -26,7 +26,7 @@
 
 #include <hardware/hardware.h>
 #include <system/audio.h>
-#include <hardware/audio_hal.h>
+#include <hardware/audio.h>
 
 struct stub_audio_device {
     struct audio_hw_device device;