Use correct type for hardware call state

Change-Id: Ic6d98b129e3ec653df1d8f7e829adf8dccb4f378
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index 8255823..7939802 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -295,7 +295,7 @@
     const size_t SIZE = 256;
     char buffer[SIZE];
     String8 result;
-    int hardwareStatus = mHardwareStatus;
+    hardware_call_state hardwareStatus = mHardwareStatus;
 
     snprintf(buffer, SIZE, "Hardware status: %d\n", hardwareStatus);
     result.append(buffer);