Use correct type for hardware call state

Change-Id: Ic6d98b129e3ec653df1d8f7e829adf8dccb4f378
diff --git a/services/audioflinger/AudioFlinger.h b/services/audioflinger/AudioFlinger.h
index 7baa8fc..c1efb37 100644
--- a/services/audioflinger/AudioFlinger.h
+++ b/services/audioflinger/AudioFlinger.h
@@ -1383,7 +1383,7 @@
                 mutable     Mutex                   mHardwareLock;
                 audio_hw_device_t*                  mPrimaryHardwareDev;
                 Vector<audio_hw_device_t*>          mAudioHwDevs;
-    mutable     int                                 mHardwareStatus;
+    mutable     hardware_call_state                 mHardwareStatus;    // for dump only
 
 
                 DefaultKeyedVector< int, sp<PlaybackThread> >  mPlaybackThreads;