ARM: dts: bcm6846: Enable watchdog

The BCM6846 has a BCM7038-compatible watchdog timer, just
add it to the device tree.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20241019-genexis-xg6846b-base-v3-2-8375a0e1f89f@linaro.org
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>

Author: Linus Walleij

arch/arm/boot/dts/broadcom/bcm6846.dtsi

@@ -99,6 +99,11 @@
 		#size-cells = <1>;
 		ranges = <0 0xff800000 0x800000>;
 
+		watchdog@480 {
+			compatible = "brcm,bcm6345-wdt";
+			reg = <0x480 0x10>;
+		};
+
 		uart0: serial@640 {
 			compatible = "brcm,bcm6345-uart";
 			reg = <0x640 0x1b>;