Support high fps sensor for rv1106/3

[gehee]

The rv1106/3 are great little SOCs but they are limited to low FPS sensors at the moment (unless I am missing something). https://github.com/rockchip-linux/rkbin/blob/master/doc/release/RV1106_EN.md

Would it be possible to add support for sensors that can do 720@120fps or 1080p@120/90fps? These modes should still fit within 2 MIPI lanes.