Add an orientation parameter for overlay, so we can do camera preview in portrait mode.
diff --git a/libs/surfaceflinger/Transform.h b/libs/surfaceflinger/Transform.h
index 78f5c19..ddab404 100644
--- a/libs/surfaceflinger/Transform.h
+++ b/libs/surfaceflinger/Transform.h
@@ -38,6 +38,7 @@
 public:
                     Transform();
                     Transform(const Transform&  other);
+                    Transform(int32_t flags);
                     ~Transform();
 
             enum orientation_flags {