dt-bindings: arm: Convert sprd board/soc bindings to json-schema

Spreadtrum SoC Platforms Device Tree Bindings

----------------------------------------------------

SC9836 openphone Board

Required root node properties:

	- compatible = "sprd,sc9836-openphone", "sprd,sc9836";

SC9860 SoC

Required root node properties:

	- compatible = "sprd,sc9860"

SP9860G 3GFHD Board

Required root node properties:

	- compatible = "sprd,sp9860g-1h10", "sprd,sc9860";

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

# Copyright 2019 Unisoc Inc.

%YAML 1.2

---

$id: http://devicetree.org/schemas/arm/sprd.yaml#

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

title: Unisoc platforms device tree bindings

maintainers:

  - Orson Zhai <orsonzhai@gmail.com>

  - Baolin Wang <baolin.wang7@gmail.com>

  - Chunyan Zhang <zhang.lyra@gmail.com>

properties:

  $nodename:

    const: '/'

  compatible:

    oneOf:

      - items:

          - enum:

              - sprd,sc9836-openphone

          - const: sprd,sc9836

      - items:

          - enum:

              - sprd,sp9860g-1h10

          - const: sprd,sc9860

...