dts: xtensa: nxp_imx8: add power domain for irqsteer

Add power domain DT node for the irqsteer and a reference to
it in irqsteer's DT node.

Signed-off-by: Laurentiu Mihalcea <[email protected]>

Author: LaurentiuM1234

dts/xtensa/nxp/nxp_imx8.dtsi

@@ -8,6 +8,7 @@
 #include <mem.h>
 #include <zephyr/dt-bindings/clock/imx_ccm.h>
 #include <zephyr/dt-bindings/dai/esai.h>
+#include <zephyr/dt-bindings/power/imx_scu_rsrc.h>
 
 / {
 	cpus {
@@ -34,6 +35,7 @@
 	irqsteer: interrupt-controller@510a0000 {
 		compatible = "nxp,irqsteer-intc";
 		reg = <0x510a0000 DT_SIZE_K(64)>;
+		power-domain = <&irqstr_pd>;
 
 		#size-cells = <0>;
 		#address-cells = <1>;
@@ -167,6 +169,17 @@
 				compatible = "nxp,imx8-pinctrl";
 			};
 		};
+
+		power-domains {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			irqstr_pd: pd@0 {
+				compatible = "nxp,imx8qm-scu-pd", "nxp,scu-pd";
+				reg = <0>;
+				nxp,resource-id = <IMX_SC_R_IRQSTR_DSP>;
+			};
+		};
 	};
 
 	lpuart2: serial@5a080000 {