arm64: dts: ti: k3-am62-main: Add PRUSS-M node

arm64: dts: ti: k3-am62-main: Add PRUSS-M node

Add the DT node for the PRUSS-M processor subsystem that is present
on the K3 AM62x SoCs. The K3 AM62x family of SoC has one PRUSS-M
instance and it has two Programmable Real-Time Units (PRU0 and PRU1).

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
[ Judith: Fix pruss_iclk id for pruss_coreclk_mux ]
Signed-off-by: Judith Mendez <jm@ti.com>
Tested-by: Daniel Schultz <d.schultz@phytec.de>
Reviewed-by: Beleswar Padhi <b-padhi@ti.com>
Acked-by: Hari Nagalla <hnagalla@ti.com>
Link: https://lore.kernel.org/r/20250430144343.972234-1-jm@ti.com
Signed-off-by: Nishanth Menon <nm@ti.com>