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

Convert ZTE SoC bindings to DT schema format using json-schema.

Cc: Jun Nie <jun.nie@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: devicetree@vger.kernel.org
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/arm/zte.yaml

@@ -0,0 +1,26 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/zte.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ZTE platforms device tree bindings
+
+maintainers:
+  - Jun Nie <jun.nie@linaro.org>
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - zte,zx296702-ad1
+          - const: zte,zx296702
+      - items:
+          - enum:
+              - zte,zx296718-evb
+          - const: zte,zx296718
+
+...