boards: beagle: pocketbeagle_2: m4: Add watchdog

- Using mcu_rti0 as watchdog timer.
- Required for MicroPython.

Signed-off-by: Ayush Singh <[email protected]>

Author: Ayush1325

boards/beagle/pocketbeagle_2/pocketbeagle_2_am6232_m4.dts

@@ -22,6 +22,10 @@
 		zephyr,sram1 = &ddr1;
 	};
 
+	aliases {
+		watchdog0 = &mcu_rti0;
+	};
+
 	cpus {
 		cpu@0 {
 			status = "okay";
@@ -59,3 +63,7 @@
 	pinctrl-names = "default";
 	status = "okay";
 };
+
+&mcu_rti0 {
+	status = "okay";
+};