arm64: dts: ti: j722s-evm: Add MUX to control CSI2RX

arm64: dts: ti: j722s-evm: Add MUX to control CSI2RX

J722S EVM has the CSI2RX routed to a MIPI CSI connector and to 22-pin RPi
camera connector through an analog mux with GPIO control, model mux so
that an overlay can control the mux state according to connected cameras.

Signed-off-by: Yemike Abhilash Chandra <y-abhilashchandra@ti.com>
Reviewed-by: Udit Kumar <u-kumar1@ti.com>
Link: https://lore.kernel.org/r/20250509091911.2442934-3-y-abhilashchandra@ti.com
Signed-off-by: Nishanth Menon <nm@ti.com>