Don't use cutils/Atomic.h

Test: builds
Change-Id: Idb7a51db4382e1012afe12df3c9fe807922b17fe
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 1b77aaf..821e15c8 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -28,8 +28,8 @@
  */
 
 #include <cutils/compiler.h>
+#include <cutils/atomic.h>
 
-#include <utils/Atomic.h>
 #include <utils/Errors.h>
 #include <utils/KeyedVector.h>
 #include <utils/RefBase.h>