fix libgui header location

Change-Id: Iec71706cdd4f29c6904993648ce873e83ef9cafe
diff --git a/include/gui/BufferQueue.h b/include/gui/BufferQueue.h
index 039e7b0..8c21a28 100644
--- a/include/gui/BufferQueue.h
+++ b/include/gui/BufferQueue.h
@@ -19,9 +19,9 @@
 
 #include <EGL/egl.h>
 
+#include <gui/IGraphicBufferAlloc.h>
 #include <gui/ISurfaceTexture.h>
 
-#include <surfaceflinger/IGraphicBufferAlloc.h>
 #include <ui/GraphicBuffer.h>
 
 #include <utils/String8.h>