ARM: tegra: add GPIO controller to tegra124.dtsi

The Tegra124 GPIO controller is identical to Tegra30, so copy the
DT node from tegra30.dtsi to tegra124.dtsi.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>

arch/arm/boot/dts/tegra124.dtsi

+#include <dt-bindings/gpio/tegra-gpio.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 
 #include "skeleton.dtsi"
@@ -29,6 +30,23 @@ timer@60005000 {
 			     <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>;
 	};
 
+	gpio: gpio@6000d000 {
+		compatible = "nvidia,tegra124-gpio", "nvidia,tegra30-gpio";
+		reg = <0x6000d000 0x1000>;
+		interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>;
+		#gpio-cells = <2>;
+		gpio-controller;
+		#interrupt-cells = <2>;
+		interrupt-controller;
+	};
+
 	/*
 	 * There are two serial driver i.e. 8250 based simple serial
 	 * driver and APB DMA based serial driver for higher baudrate