Fixed clang build error for libgui

Fixed the order of the statements in ANDROID_SINGLETON_STATIC_INSTANCE
macro so that the templated static member variable initialization
comes before the instantiation of the Singleton class. This
fixes the clang compile error.

Change-Id: Ic47d17e152b657f2dff3191ccc3770753fdf002b
Author: Tareq A. Siraj <tareq.a.siraj@intel.com>
Reviewed-by: Edwin Vane <edwin.vane@intel.com>
diff --git a/include/utils/Singleton.h b/include/utils/Singleton.h
index a42ce21..c60680e 100644
--- a/include/utils/Singleton.h
+++ b/include/utils/Singleton.h
@@ -65,9 +65,9 @@
  */
 
 #define ANDROID_SINGLETON_STATIC_INSTANCE(TYPE)                 \
-    template class Singleton< TYPE >;                           \
     template<> Mutex Singleton< TYPE >::sLock(Mutex::PRIVATE);  \
-    template<> TYPE* Singleton< TYPE >::sInstance(0);
+    template<> TYPE* Singleton< TYPE >::sInstance(0);           \
+    template class Singleton< TYPE >;
 
 
 // ---------------------------------------------------------------------------