arm64: dts: amazon: alpine-v3: Add default GIC address cells

Add missing address-cells 0 to GIC interrupt node to silence W=1
warning:

alpine-v3.dtsi:342.4-349.33: Warning (interrupt_map): /soc/pcie@fbd00000:interrupt-map:
Missing property '#address-cells' in node /soc/interrupt-controller@f0800000, using 0 as fallback

Value '0' is correct because:
1. GIC interrupt controller does not have children,
2. interrupt-map property (in PCI node) consists of five components and
the fourth component "parent unit address", which size is defined by
'#address-cells' of the node pointed to by the interrupt-parent
component, is not used (=0)

Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Krzysztof Kozlowski <[e-mail]>

arch/arm64/boot/dts/amazon/alpine-v3.dtsi

···
 
 		gic: interrupt-controller@f0800000 {
 			compatible = "arm,gic-v3";
+			#address-cells = <0>;
 			#interrupt-cells = <3>;
 			interrupt-controller;
 			reg = <0x0 0xf0800000 0 0x10000>,	/* GICD */