media: dt-bindings: Add JH7110 Camera Subsystem

Add the bindings documentation for Starfive JH7110 Camera Subsystem
which is used for handing image sensor data.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jack Zhu <jack.zhu@starfivetech.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>