am 34afb68c: Add screen state parameter

* commit '34afb68c0cd1de315f0250f6a95b9dba234133ae':
  Add screen state parameter
diff --git a/include/hardware/audio.h b/include/hardware/audio.h
index 9bd62aa..01d79b2 100644
--- a/include/hardware/audio.h
+++ b/include/hardware/audio.h
@@ -91,6 +91,9 @@
 /* A2DP sink address set by framework */
 #define AUDIO_PARAMETER_A2DP_SINK_ADDRESS "a2dp_sink_address"
 
+/* Screen state */
+#define AUDIO_PARAMETER_KEY_SCREEN_STATE "screen_state"
+
 /**
  *  audio stream parameters
  */