arm64: dts: apple: add #interrupt-cells property to pinctrl nodes

Required for devices trying to use pinctrl devices as interrupt
controller.

Fixes: 0a8282b8 ("arm64: apple: Add pinctrl nodes")
Signed-off-by: NJanne Grunau <j@jannau.net>
Cc: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: NSven Peter <sven@svenpeter.dev>
Reviewed-by: NMark Kettenis <kettenis@openbsd.org>
Tested-by: NHector Martin <marcan@marcan.st>
Signed-off-by: NHector Martin <marcan@marcan.st>

arch/arm64/boot/dts/apple/t8103.dtsi

@@ -143,6 +143,7 @@
 			apple,npins = <212>;
 
 			interrupt-controller;
+			#interrupt-cells = <2>;
 			interrupt-parent = <&aic>;
 			interrupts = <AIC_IRQ 190 IRQ_TYPE_LEVEL_HIGH>,
 				     <AIC_IRQ 191 IRQ_TYPE_LEVEL_HIGH>,
@@ -169,6 +170,7 @@
 			apple,npins = <42>;
 
 			interrupt-controller;
+			#interrupt-cells = <2>;
 			interrupt-parent = <&aic>;
 			interrupts = <AIC_IRQ 268 IRQ_TYPE_LEVEL_HIGH>,
 				     <AIC_IRQ 269 IRQ_TYPE_LEVEL_HIGH>,
@@ -189,6 +191,7 @@
 			apple,npins = <23>;
 
 			interrupt-controller;
+			#interrupt-cells = <2>;
 			interrupt-parent = <&aic>;
 			interrupts = <AIC_IRQ 330 IRQ_TYPE_LEVEL_HIGH>,
 				     <AIC_IRQ 331 IRQ_TYPE_LEVEL_HIGH>,
@@ -209,6 +212,7 @@
 			apple,npins = <16>;
 
 			interrupt-controller;
+			#interrupt-cells = <2>;
 			interrupt-parent = <&aic>;
 			interrupts = <AIC_IRQ 391 IRQ_TYPE_LEVEL_HIGH>,
 				     <AIC_IRQ 392 IRQ_TYPE_LEVEL_HIGH>,