dt-bindings: net: convert lpc-eth.txt yaml format

* NXP LPC32xx SoC Ethernet Controller

Required properties:

- compatible: Should be "nxp,lpc-eth"

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

- interrupts: Should contain ethernet controller interrupt

Optional properties:

- phy-mode: See ethernet.txt file in the same directory. If the property is

  absent, "rmii" is assumed.

- use-iram: Use LPC32xx internal SRAM (IRAM) for DMA buffering

Optional subnodes:

- mdio : specifies the mdio bus, used as a container for phy nodes according to

  phy.txt in the same directory

Example:

	mac: ethernet@31060000 {

		compatible = "nxp,lpc-eth";

		reg = <0x31060000 0x1000>;

		interrupt-parent = <&mic>;

		interrupts = <29 0>;

		phy-mode = "rmii";

		use-iram;

	};

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/net/nxp,lpc-eth.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#

title: NXP LPC32xx SoC Ethernet Controller

maintainers:

  - Frank Li <Frank.Li@nxp.com>

properties:

  compatible:

    const: nxp,lpc-eth

  reg:

    maxItems: 1

  clocks:

    maxItems: 1

  interrupts:

    maxItems: 1

  use-iram:

    $ref: /schemas/types.yaml#/definitions/flag

    description: Use LPC32xx internal SRAM (IRAM) for DMA buffering

required:

  - compatible

  - reg

  - interrupts

allOf:

  - $ref: ethernet-controller.yaml#

unevaluatedProperties: false

examples:

  - |

    ethernet@31060000 {

        compatible = "nxp,lpc-eth";

        reg = <0x31060000 0x1000>;

        interrupt-parent = <&mic>;

        interrupts = <29 0>;

        phy-mode = "rmii";

        use-iram;

    };