arm64: dts: rockchip: enable I2C interface from DSI and CSI connectors on rock-5a

I2C3 is routed to the Camera connector and I2C5 is routed to the LCD
connector. On I2C5 additionally there is an unpopulated footprint for
a HYM8563TS RTC.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20230710165228.105983-12-sebastian.reichel@collabora.com


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