Fix syntax of mdio.txt to match actual syntax.

[lsorense@csclub.uwaterloo.ca (Lennart Sorensen)]

The syntax in Documentation/powerpc/dts-bindings/gpio/mdio.txt is not
up to date and no longer works.  Fix this as well as actually show how
to represent a PHY on the gpio-bitbang bus.

Tested with 2.6.31 on a RuggedCom RX5000 (mpc8360e based).

Signed-off-by: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>

diff --git a/Documentation/powerpc/dts-bindings/gpio/mdio.txt b/Documentation/powerpc/dts-bindings/gpio/mdio.txt
index bc95495..7a84f25 100644
--- a/Documentation/powerpc/dts-bindings/gpio/mdio.txt
+++ b/Documentation/powerpc/dts-bindings/gpio/mdio.txt
@@ -14,6 +14,15 @@ mdio {
 	compatible = "virtual,mdio-gpio";
 	#address-cells = <1>;
 	#size-cells = <0>;
-	gpios = <&qe_pio_a 11
-		 &qe_pio_c 6>;
+	gpios = <&qe_pio_a 11 0
+		 &qe_pio_c 6 0>;
+
+	phy0: ethernet-phy@00 {
+		reg = <0x18>;
+		device_type = "ethernet-phy";
+	};
+	phy1: ethernet-phy@01 {
+		reg = <0x0f>;
+		device_type = "ethernet-phy";
+	};
 };