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This patch adds driver for Omnivision's ov2685 sensor.
Though the ov2685 can output yuv data, this driver only
supports the raw bayer format, including the following features:
  - output 1600x1200 at 30fps
  - test patterns
  - manual exposure/gain control
  - vblank and hblank
  - media controller
  - runtime pm

[Sakari Ailus: trivial: ov5695_of_match -> ov2685_of_match]
Signed-off-by: Shunqian Zheng <zhengsq@rock-chips.com>
Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>