arm64: dts: qcom: sc8280xp: correct GIC child node name

GIC child node is supposed to be named msi-controller:

  sa8295p-adp.dtb: interrupt-controller@17a00000: gic-its@17a40000: False schema does not allow
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230417080939.28648-3-krzysztof.kozlowski@linaro.org

arch/arm64/boot/dts/qcom/sc8280xp.dtsi

@@ -3925,7 +3925,7 @@ intc: interrupt-controller@17a00000 {
 			#size-cells = <2>;
 			ranges;
 
-			gic-its@17a40000 {
+			msi-controller@17a40000 {
 				compatible = "arm,gic-v3-its";
 				reg = <0 0x17a40000 0 0x20000>;
 				msi-controller;