By convention const goes before the type specifier

Change-Id: I70203abd6a6f54e5bd9f1412800cc01212157e58
diff --git a/services/audioflinger/AudioMixer.h b/services/audioflinger/AudioMixer.h
index 9c129b8..cd70340 100644
--- a/services/audioflinger/AudioMixer.h
+++ b/services/audioflinger/AudioMixer.h
@@ -145,7 +145,7 @@
         mutable AudioBufferProvider::Buffer buffer;
 
         hook_t      hook;
-        void const* in;             // current location in buffer
+        const void* in;             // current location in buffer
 
         AudioResampler*     resampler;
         uint32_t            sampleRate;