arm64: dts: renesas: falcon-csi-dsi: Add and connect MAX96712

The sub-board contains three MAX96712 connected to the main-board using
I2C and CSI-2, record the connections. Also enable all nodes (VIN, CSI-2
and ISP) that are part of the downstream video capture pipeline.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/20220113163239.3035073-1-niklas.soderlund+renesas@ragnatech.se


Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>