ARM: kirkwood: Add device-tree for netspace & inetspace

Import the dts files from Linux 4.17 and enable CONFIG_OF_CONTROL.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/arch/arm/dts/kirkwood-ns2-common.dtsi b/arch/arm/dts/kirkwood-ns2-common.dtsi
new file mode 100644
index 0000000..f997bb4
--- /dev/null
+++ b/arch/arm/dts/kirkwood-ns2-common.dtsi
@@ -0,0 +1,97 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "kirkwood.dtsi"
+#include "kirkwood-6281.dtsi"
+
+/ {
+	chosen {
+		bootargs = "console=ttyS0,115200n8";
+		stdout-path = &uart0;
+	};
+
+	ocp@f1000000 {
+		pinctrl: pin-controller@10000 {
+			pmx_ns2_sata0: pmx-ns2-sata0 {
+				marvell,pins = "mpp21";
+				marvell,function = "sata0";
+			};
+			pmx_ns2_sata1: pmx-ns2-sata1 {
+				marvell,pins = "mpp20";
+				marvell,function = "sata1";
+			};
+		};
+
+		serial@12000 {
+			status = "okay";
+		};
+
+		spi@10600 {
+			status = "okay";
+
+			flash@0 {
+				#address-cells = <1>;
+				#size-cells = <1>;
+				compatible = "mxicy,mx25l4005a", "jedec,spi-nor", "spi-flash";
+				reg = <0>;
+				spi-max-frequency = <20000000>;
+				mode = <0>;
+
+				partition@0 {
+					reg = <0x0 0x80000>;
+					label = "u-boot";
+				};
+			};
+		};
+
+		i2c@11000 {
+			status = "okay";
+
+			eeprom@50 {
+				compatible = "atmel,24c04";
+				pagesize = <16>;
+				reg = <0x50>;
+			};
+		};
+	};
+
+	gpio_keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		power {
+			label = "Power push button";
+			linux,code = <KEY_POWER>;
+			gpios = <&gpio1 0 GPIO_ACTIVE_HIGH>;
+		};
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		red-fail {
+			label = "ns2:red:fail";
+			gpios = <&gpio0 12 GPIO_ACTIVE_HIGH>;
+		};
+	};
+
+	gpio_poweroff {
+		compatible = "gpio-poweroff";
+		gpios = <&gpio0 31 GPIO_ACTIVE_HIGH>;
+	};
+
+};
+
+&mdio {
+	status = "okay";
+
+	ethphy0: ethernet-phy@X {
+                /* overwrite reg property in board file */
+	};
+};
+
+&eth0 {
+	status = "okay";
+	ethernet0-port@0 {
+		phy-handle = <&ethphy0>;
+	};
+};