media: dt-bindings: media: i2c: Add MT9M114 camera sensor binding

Add device tree binding for the onsemi MT9M114 CMOS camera sensor.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>