arm64: dts: Add GPIO DT nodes for Stingray SOC

The GPIOs on Stingray SOC are based on iProc GPIOs hence
using this we add GPIO DT nodes for Stingray SOC.
Signed-off-by: Pramod Kumar <pramodku@broadcom.com>
Reviewed-by: Ray Jui <rjui@broadcom.com>
Reviewed-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

arch/arm64/boot/dts/broadcom/stingray/stingray.dtsi

@@ -251,6 +251,14 @@ crmu: crmu {
 		ranges = <0x0 0x0 0x66400000 0x100000>;
 
 		#include "stingray-clock.dtsi"
+
+		gpio_crmu: gpio@00024800 {
+			compatible = "brcm,iproc-gpio";
+			reg = <0x00024800 0x4c>;
+			ngpios = <6>;
+			#gpio-cells = <2>;
+			gpio-controller;
+		};
 	};
 
 	hsls {
@@ -261,6 +269,32 @@ hsls {
 
 		#include "stingray-pinctrl.dtsi"
 
+		gpio_hsls: gpio@000d0000 {
+			compatible = "brcm,iproc-gpio";
+			reg = <0x000d0000 0x864>;
+			ngpios = <151>;
+			#gpio-cells = <2>;
+			gpio-controller;
+			interrupt-controller;
+			interrupts = <GIC_SPI 183 IRQ_TYPE_LEVEL_HIGH>;
+			gpio-ranges = <&pinmux 0 0 16>,
+					<&pinmux 16 71 2>,
+					<&pinmux 18 131 8>,
+					<&pinmux 26 83 6>,
+					<&pinmux 32 123 4>,
+					<&pinmux 36 43 24>,
+					<&pinmux 60 89 2>,
+					<&pinmux 62 73 4>,
+					<&pinmux 66 95 28>,
+					<&pinmux 94 127 4>,
+					<&pinmux 98 139 10>,
+					<&pinmux 108 16 27>,
+					<&pinmux 135 77 6>,
+					<&pinmux 141 67 4>,
+					<&pinmux 145 149 6>,
+					<&pinmux 151 91 4>;
+		};
+
 		uart0: uart@00100000 {
 			device_type = "serial";
 			compatible = "snps,dw-apb-uart";