apple/t8103.dts: DT changes for FIQ support

We need a new node for the FIQ interrupt controller, and either that
new node or the existing aic node need to be tagged with "use-for-ipi".

Signed-off-by: Pip Cet <pipcet@gmail.com>

Author: pipcet

arch/arm64/boot/dts/apple/t8103-j274.dts

@@ -34,6 +34,16 @@
 		};
 	};
 
+	soc {
+		aic: interrupt-controller@23b100000 {
+		        /* use-for-ipi; */
+		};
+	};
+
+	fiq: interrupt-controller {
+	     	use-for-ipi;
+	};
+
 	memory@800000000 {
 		device_type = "memory";
 		reg = <0x8 0 0x2 0>; /* To be filled by loader */

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

@@ -85,9 +85,15 @@
 		};
 	};
 
+	fiq: interrupt-controller {
+	        compatible = "apple,fiq";
+		#interrupt-cells = <3>;
+		interrupt-controller;
+	};
+
 	timer {
 		compatible = "arm,armv8-timer";
-		interrupt-parent = <&aic>;
+		interrupt-parent = <&fiq>;
 		interrupt-names = "phys", "virt", "hyp-phys", "hyp-virt";
 		interrupts = <AIC_FIQ AIC_TMR_GUEST_PHYS IRQ_TYPE_LEVEL_HIGH>,
 			     <AIC_FIQ AIC_TMR_GUEST_VIRT IRQ_TYPE_LEVEL_HIGH>,