Add a device tree node for the MDIO controller on the RTL9300 chips.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
---
 arch/mips/boot/dts/realtek/rtl930x.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/mips/boot/dts/realtek/rtl930x.dtsi b/arch/mips/boot/dts/realtek/rtl930x.dtsi
index 17577457d159..5f74d121ce84 100644
--- a/arch/mips/boot/dts/realtek/rtl930x.dtsi
+++ b/arch/mips/boot/dts/realtek/rtl930x.dtsi
@@ -57,6 +57,14 @@ i2c1: i2c@388 {
 			#size-cells = <0>;
 			status = "disabled";
 		};
+
+		mdio0: mdio@ca00 {
+			compatible = "realtek,rtl9301-mdio";
+			reg = <0xca00 0x200>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
 	};
 };
 
-- 
2.47.1