arm64: dts: ti: k3-am62a-phycore-som: Reserve main_rti4 for C7x DSP

The main rti4 watchdog timer is used by the C7x DSP, so reserve the
timer in the linux device tree.

Signed-off-by: Daniel Schultz <[email protected]>
Reviewed-by: Judith Mendez <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Nishanth Menon <[email protected]>

Author: dnltz

arch/arm64/boot/dts/ti/k3-am62a-phycore-som.dtsi

@@ -379,6 +379,11 @@
 	bootph-all;
 };
 
+/* main_rti4 is used by C7x DSP */
+&main_rti4 {
+	status = "reserved";
+};
+
 &mcu_r5fss0 {
 	status = "okay";
 };