ARM: kirkwood: Add device-tree for openrd

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-openrd-base.dts b/arch/arm/dts/kirkwood-openrd-base.dts
new file mode 100644
index 0000000..094191e
--- /dev/null
+++ b/arch/arm/dts/kirkwood-openrd-base.dts
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Marvell OpenRD Base Board Description
+ *
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file contains the definitions that are specific to OpenRD
+ * base variant of the Marvell Kirkwood Development Board.
+ */
+
+/dts-v1/;
+
+#include "kirkwood-openrd.dtsi"
+
+/ {
+	model = "OpenRD Base";
+	compatible = "marvell,openrd-base", "marvell,openrd", "marvell,kirkwood-88f6281", "marvell,kirkwood";
+
+	ocp@f1000000 {
+		serial@12100 {
+			status = "okay";
+		};
+	};
+};
+
+&mdio {
+	status = "okay";
+
+	ethphy0: ethernet-phy@8 {
+		reg = <8>;
+	};
+};
+
+&eth0 {
+	status = "okay";
+	ethernet0-port@0 {
+		phy-handle = <&ethphy0>;
+	};
+};