Switch rockpi to use imx290 camera

Our sensor, imx462 is similar enough that the imx290 driver supports it.
This change relies on changes to frc971/linux

Signed-off-by: Ravago Jones <ravagojones@gmail.com>
Change-Id: I7a1ba5367e9ead7cc2b4c1a098102fc4b535d612
diff --git a/frc971/vision/v4l2_reader.h b/frc971/vision/v4l2_reader.h
index 2013113..182160d 100644
--- a/frc971/vision/v4l2_reader.h
+++ b/frc971/vision/v4l2_reader.h
@@ -151,6 +151,9 @@
   void SetExposure(size_t duration) override;
 
   void SetGain(size_t gain);
+  void SetGainExt(size_t gain);
+
+  void SetBlanking(size_t hblank, size_t vblank);
 
  private:
   void OnImageReady();