ARM: davinci: da850: add DT node for mdio device

Add mdio device tree node information to da850 by
providing register details and bus frequency of mdio.
Signed-off-by: NLad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: NSekhar Nori <nsekhar@ti.com>

arch/arm/boot/dts/da850-evm.dts

@@ -90,6 +90,12 @@ partition@5 {
 				};
 			};
 		};
+		mdio: mdio@1e24000 {
+			status = "okay";
+			pinctrl-names = "default";
+			pinctrl-0 = <&mdio_pins>;
+			bus_freq = <2200000>;
+		};
 	};
 	nand_cs3@62000000 {
 		status = "okay";

arch/arm/boot/dts/da850.dtsi

@@ -125,6 +125,13 @@ spi1_cs0_pin: pinmux_spi1_cs0 {
 					0x14 0x00000010 0x000000f0
 				>;
 			};
+			mdio_pins: pinmux_mdio_pins {
+				pinctrl-single,bits = <
+					/* MDIO_CLK, MDIO_D */
+					0x10 0x00000088 0x000000ff
+				>;
+			};
+
 		};
 		serial0: serial@1c42000 {
 			compatible = "ns16550a";
@@ -216,6 +223,12 @@ spi1: spi@1f0e000 {
 			interrupts = <56>;
 			status = "disabled";
 		};
+		mdio: mdio@1e24000 {
+			compatible = "ti,davinci_mdio";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x224000 0x1000>;
+		};
 	};
 	nand_cs3@62000000 {
 		compatible = "ti,davinci-nand";