dt-bindings: phy: Armada 38x common phy bindings

mvebu armada 38x comphy driver

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This comphy controller can be found on Marvell Armada 38x. It provides a

number of shared PHYs used by various interfaces (network, sata, usb,

PCIe...).

Required properties:

- compatible: should be "marvell,armada-380-comphy"

- reg: should contain the comphy register location and length.

- #address-cells: should be 1.

- #size-cells: should be 0.

A sub-node is required for each comphy lane provided by the comphy.

Required properties (child nodes):

- reg: comphy lane number.

- #phy-cells : from the generic phy bindings, must be 1. Defines the

               input port to use for a given comphy lane.

Example:

	comphy: phy@18300 {

		compatible = "marvell,armada-380-comphy";

		reg = <0x18300 0x100>;

		#address-cells = <1>;

		#size-cells = <0>;

		cpm_comphy0: phy@0 {

			reg = <0>;

			#phy-cells = <1>;

		};

		cpm_comphy1: phy@1 {

			reg = <1>;

			#phy-cells = <1>;

		};

	};