fix libgui header location

Change-Id: Iec71706cdd4f29c6904993648ce873e83ef9cafe
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index fcd9361..b507877 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -33,9 +33,9 @@
 #include <binder/IMemory.h>
 
 #include <ui/PixelFormat.h>
-#include <surfaceflinger/IGraphicBufferAlloc.h>
-#include <surfaceflinger/ISurfaceComposer.h>
-#include <surfaceflinger/ISurfaceComposerClient.h>
+#include <gui/IGraphicBufferAlloc.h>
+#include <gui/ISurfaceComposer.h>
+#include <gui/ISurfaceComposerClient.h>
 
 #include "Barrier.h"
 #include "Layer.h"