arm64: dts: qcom: ipq8074: add interrupt-parent to DTSI

Add interrupt-parent to the SoC DTSI to avoid duplicating it in each board
DTS file.

Remove interrupt-parent from existing board DTS files.
Signed-off-by: Robert Marko <robimarko@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220708133846.599735-2-robimarko@gmail.com

arch/arm64/boot/dts/qcom/ipq8074-hk01.dts

@@ -7,7 +7,6 @@
 / {
 	model = "Qualcomm Technologies, Inc. IPQ8074-HK01";
 	compatible = "qcom,ipq8074-hk01", "qcom,ipq8074";
-	interrupt-parent = <&intc>;
 
 	aliases {
 		serial0 = &blsp1_uart5;

arch/arm64/boot/dts/qcom/ipq8074-hk10.dtsi

@@ -7,8 +7,6 @@
 #include "ipq8074.dtsi"
 
 / {
-	interrupt-parent = <&intc>;
-
 	aliases {
 		serial0 = &blsp1_uart5;
 	};

arch/arm64/boot/dts/qcom/ipq8074.dtsi

@@ -12,6 +12,7 @@ / {
 
 	model = "Qualcomm Technologies, Inc. IPQ8074";
 	compatible = "qcom,ipq8074";
+	interrupt-parent = <&intc>;
 
 	clocks {
 		sleep_clk: sleep_clk {