arm: dts: apple: Add watchdog timer node

Add a node for the watchdog timer based on the proposed Linux
device tree bindings.

Remove the old reboot node which was a watchdog timert node in
disguise using a preliminary device tree binding.

Signed-off-by: Sven Peter <sven@svenpeter.dev>
Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-on: Apple M1 Macbook
Tested-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/dts/t8103.dtsi b/arch/arm/dts/t8103.dtsi
index 7d9cb27..03d8436 100644
--- a/arch/arm/dts/t8103.dtsi
+++ b/arch/arm/dts/t8103.dtsi
@@ -328,6 +328,14 @@
 				     <AIC_IRQ 336 IRQ_TYPE_LEVEL_HIGH>;
 		};
 
+		wdt: watchdog@23d2b0000 {
+			compatible = "apple,t8103-wdt", "apple,wdt";
+			reg = <0x2 0x3d2b0000 0x0 0x4000>;
+			clocks = <&clkref>;
+			interrupt-parent = <&aic>;
+			interrupts = <AIC_IRQ 338 IRQ_TYPE_LEVEL_HIGH>;
+		};
+
 		pinctrl_smc: pinctrl@23e820000 {
 			compatible = "apple,t8103-pinctrl", "apple,pinctrl";
 			reg = <0x2 0x3e820000 0x0 0x4000>;
@@ -529,11 +537,6 @@
 			status = "disabled";
 		};
 
-		reboot@23d2b0000 {
-			compatible = "apple,reboot-v0";
-			reg = <0x2 0x3d2b0000 0x0 0x4000>;
-		};
-
 		spi@23510c000 {
 			compatible = "apple,t8103-spi", "apple,spi";
 			reg = <0x2 0x3510c000 0x0 0x4000>;