arm64: dts: imx8mn: Add gpio-ranges property

Add "gpio-ranges" property to establish connections between GPIOs
and PINs on i.MX8MN pinctrl driver.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mn.dtsi

@@ -173,6 +173,7 @@ gpio1: gpio@30200000 {
 				#gpio-cells = <2>;
 				interrupt-controller;
 				#interrupt-cells = <2>;
+				gpio-ranges = <&iomuxc 0 10 30>;
 			};
 
 			gpio2: gpio@30210000 {
@@ -185,6 +186,7 @@ gpio2: gpio@30210000 {
 				#gpio-cells = <2>;
 				interrupt-controller;
 				#interrupt-cells = <2>;
+				gpio-ranges = <&iomuxc 0 40 21>;
 			};
 
 			gpio3: gpio@30220000 {
@@ -197,6 +199,7 @@ gpio3: gpio@30220000 {
 				#gpio-cells = <2>;
 				interrupt-controller;
 				#interrupt-cells = <2>;
+				gpio-ranges = <&iomuxc 0 61 26>;
 			};
 
 			gpio4: gpio@30230000 {
@@ -209,6 +212,7 @@ gpio4: gpio@30230000 {
 				#gpio-cells = <2>;
 				interrupt-controller;
 				#interrupt-cells = <2>;
+				gpio-ranges = <&iomuxc 21 108 11>;
 			};
 
 			gpio5: gpio@30240000 {
@@ -221,6 +225,7 @@ gpio5: gpio@30240000 {
 				#gpio-cells = <2>;
 				interrupt-controller;
 				#interrupt-cells = <2>;
+				gpio-ranges = <&iomuxc 0 119 30>;
 			};
 
 			wdog1: watchdog@30280000 {