arm64: dts: ti: k3-j721e-main: Add nodes to enable CSI2-1 and DPHY-1

Add node for the second instance of Cadence CSI2RX-1, DPHY-1, and TI's
CSI2RX wrapper. This enables CSI2 capture from the second instance of the
J721E camera subsystem.

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>