arm: mvebu: Add gpio-ranges into Armada 38x device tree file

This allows U-Boot mvebu-gpio.c driver to switch particular MPP pin into
GPIO mode and enable GPIO support.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/arch/arm/dts/armada-38x.dtsi b/arch/arm/dts/armada-38x.dtsi
index 061bd78..7d76df3 100644
--- a/arch/arm/dts/armada-38x.dtsi
+++ b/arch/arm/dts/armada-38x.dtsi
@@ -295,6 +295,7 @@
 				reg-names = "gpio", "pwm";
 				ngpios = <32>;
 				gpio-controller;
+				gpio-ranges = <&pinctrl 0 0 32>;
 				#gpio-cells = <2>;
 				#pwm-cells = <2>;
 				interrupt-controller;
@@ -313,6 +314,7 @@
 				reg-names = "gpio", "pwm";
 				ngpios = <28>;
 				gpio-controller;
+				gpio-ranges = <&pinctrl 0 32 28>;
 				#gpio-cells = <2>;
 				#pwm-cells = <2>;
 				interrupt-controller;