ARM: dts: berlin: add the BG2Q GPIO nodes

The Marvell Berlin BG2Q has 6 GPIO ports compatible with the snps,dw-apb-gpio
driver. This patch adds the corresponding device tree nodes.
Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Reviewed-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>

arch/arm/boot/dts/berlin2q.dtsi

@@ -114,6 +114,78 @@ apb@e80000 {
 			ranges = <0 0xe80000 0x10000>;
 			interrupt-parent = <&aic>;
 
+			gpio0: gpio@0400 {
+				compatible = "snps,dw-apb-gpio";
+				reg = <0x0400 0x400>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				porta: gpio-port@0 {
+					compatible = "snps,dw-apb-gpio-port";
+					gpio-controller;
+					#gpio-cells = <2>;
+					snps,nr-gpios = <32>;
+					reg = <0>;
+					interrupt-controller;
+					#interrupt-cells = <2>;
+					interrupts = <0>;
+				};
+			};
+
+			gpio1: gpio@0800 {
+				compatible = "snps,dw-apb-gpio";
+				reg = <0x0800 0x400>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				portb: gpio-port@1 {
+					compatible = "snps,dw-apb-gpio-port";
+					gpio-controller;
+					#gpio-cells = <2>;
+					snps,nr-gpios = <32>;
+					reg = <0>;
+					interrupt-controller;
+					#interrupt-cells = <2>;
+					interrupts = <1>;
+				};
+			};
+
+			gpio2: gpio@0c00 {
+				compatible = "snps,dw-apb-gpio";
+				reg = <0x0c00 0x400>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				portc: gpio-port@2 {
+					compatible = "snps,dw-apb-gpio-port";
+					gpio-controller;
+					#gpio-cells = <2>;
+					snps,nr-gpios = <32>;
+					reg = <0>;
+					interrupt-controller;
+					#interrupt-cells = <2>;
+					interrupts = <2>;
+				};
+			};
+
+			gpio3: gpio@1000 {
+				compatible = "snps,dw-apb-gpio";
+				reg = <0x1000 0x400>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				portd: gpio-port@3 {
+					compatible = "snps,dw-apb-gpio-port";
+					gpio-controller;
+					#gpio-cells = <2>;
+					snps,nr-gpios = <32>;
+					reg = <0>;
+					interrupt-controller;
+					#interrupt-cells = <2>;
+					interrupts = <3>;
+				};
+			};
+
 			timer0: timer@2c00 {
 				compatible = "snps,dw-apb-timer";
 				reg = <0x2c00 0x14>;
@@ -186,6 +258,36 @@ aic: interrupt-controller@3800 {
 				interrupt-parent = <&gic>;
 				interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
 			};
+
+			gpio4: gpio@5000 {
+				compatible = "snps,dw-apb-gpio";
+				reg = <0x5000 0x400>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				porte: gpio-port@4 {
+					compatible = "snps,dw-apb-gpio-port";
+					gpio-controller;
+					#gpio-cells = <2>;
+					snps,nr-gpios = <32>;
+					reg = <0>;
+				};
+			};
+
+			gpio5: gpio@c000 {
+				compatible = "snps,dw-apb-gpio";
+				reg = <0xc000 0x400>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				portf: gpio-port@5 {
+					compatible = "snps,dw-apb-gpio-port";
+					gpio-controller;
+					#gpio-cells = <2>;
+					snps,nr-gpios = <32>;
+					reg = <0>;
+				};
+			};
 		};
 
 		generic-regs@ea0110 {