hack copybit back in for video playback on msm7k. we have h/w accelerated video again

libs/ui/FramebufferNativeWindow.cpp

@@ -63,6 +63,11 @@ private:
 };
 
 
+android_native_buffer_t const* FramebufferNativeWindow::getBackbuffer() const {
+    return static_cast<android_native_buffer_t const*>(buffers[mLastDequeued].get());
+}
+
+
 /*
  * This implements the (main) framebuffer management. This class is used
  * mostly by SurfaceFlinger, but also by command line GL application.
@@ -165,6 +170,7 @@ int FramebufferNativeWindow::dequeueBuffer(android_native_window_t* window,
     if (self->mBufferHead >= self->mNumBuffers)
         self->mBufferHead = 0;
 
+    self->mLastDequeued = index;
     *buffer = self->buffers[index].get();
 
     return 0;