Add an orientation parameter for overlay, so we can do camera preview in portrait mode.
diff --git a/media/libstagefright/CameraSource.cpp b/media/libstagefright/CameraSource.cpp
index bd862e0..8cd572e 100644
--- a/media/libstagefright/CameraSource.cpp
+++ b/media/libstagefright/CameraSource.cpp
@@ -56,7 +56,7 @@
     virtual void unregisterBuffers() {}
 
     virtual sp<OverlayRef> createOverlay(
-            uint32_t w, uint32_t h, int32_t format) {
+            uint32_t w, uint32_t h, int32_t format, int32_t orientation) {
         return NULL;
     }