arm64: dts: rockchip: Add DSI and DSI-DPHY nodes to rk356x

This adds the DSI controller nodes and DSI-DPHY controller nodes to the
rk356x device tree.

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Acked-by: Michael Riesch <michael.riesch@wolfvision.net>
Link: https://lore.kernel.org/r/20220919164616.12492-4-macroalpha82@gmail.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>