Add fsl,magic-packet to, and clean up, the gianfar binding.

* Gianfar-compatible ethernet nodes

Required properties:

Properties:

  - device_type : Should be "network"

  - model : Model of the device.  Can be "TSEC", "eTSEC", or "FEC"

  - compatible : Should be "gianfar"

  - reg : Offset and length of the register set for the device

  - mac-address : List of bytes representing the ethernet address of

  - local-mac-address : List of bytes representing the ethernet address of

    this controller

  - interrupts : <a b> where a is the interrupt number and b is a

    field that represents an encoding of the sense and level

    information for the interrupt.  This should be encoded based on

    the information in section 2) depending on the type of interrupt

    controller you have.

  - interrupt-parent : the phandle for the interrupt controller that

    services interrupts for this device.

  - interrupts : For FEC devices, the first interrupt is the device's

    interrupt.  For TSEC and eTSEC devices, the first interrupt is

    transmit, the second is receive, and the third is error.

  - phy-handle : The phandle for the PHY connected to this ethernet

    controller.

  - fixed-link : <a b c d e> where a is emulated phy id - choose any,

    but unique to the all specified fixed-links, b is duplex - 0 half,

    1 full, c is link speed - d#10/d#100/d#1000, d is pause - 0 no

    pause, 1 pause, e is asym_pause - 0 no asym_pause, 1 asym_pause.

Recommended properties:

  - phy-connection-type : a string naming the controller/PHY interface type,

    i.e., "mii" (default), "rmii", "gmii", "rgmii", "rgmii-id", "sgmii",

    "tbi", or "rtbi".  This property is only really needed if the connection

    is of type "rgmii-id", as all other connection types are detected by

    hardware.

  - fsl,magic-packet : If present, indicates that the hardware supports

    waking up via magic packet.

Example:

	ethernet@24000 {

		#size-cells = <0>;

		device_type = "network";

		model = "TSEC";

		compatible = "gianfar";

		reg = <24000 1000>;

		mac-address = [ 00 E0 0C 00 73 00 ];

		interrupts = <d 3 e 3 12 3>;

		interrupt-parent = <40000>;

		phy-handle = <2452000>

		reg = <0x24000 0x1000>;

		local-mac-address = [ 00 E0 0C 00 73 00 ];

		interrupts = <29 2 30 2 34 2>;

		interrupt-parent = <&mpic>;

		phy-handle = <&phy0>

	};