dt-bindings: marvell: Convert the SoC compatibles description to YAML

Convert the file detailing Marvell EBU compatibles to json-schema.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>

Documentation/devicetree/bindings/arm/marvell/armada-7k-8k.txt

-Marvell Armada 7K/8K Platforms Device Tree Bindings
----------------------------------------------------
-
-Boards using a SoC of the Marvell Armada 7K or 8K families must carry
-the following root node property:
-
- - compatible, with one of the following values:
-
-   - "marvell,armada7020", "marvell,armada-ap806-dual", "marvell,armada-ap806"
-      when the SoC being used is the Armada 7020
-
-   - "marvell,armada7040", "marvell,armada-ap806-quad", "marvell,armada-ap806"
-      when the SoC being used is the Armada 7040
-
-   - "marvell,armada8020", "marvell,armada-ap806-dual", "marvell,armada-ap806"
-      when the SoC being used is the Armada 8020
-
-   - "marvell,armada8040", "marvell,armada-ap806-quad", "marvell,armada-ap806"
-      when the SoC being used is the Armada 8040
-
-Example:
-
-compatible = "marvell,armada7040-db", "marvell,armada7040",
-             "marvell,armada-ap806-quad", "marvell,armada-ap806";

Documentation/devicetree/bindings/arm/marvell/armada-7k-8k.yaml

+# SPDX-License-Identifier: (GPL-2.0+ OR X11)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/marvell/armada-7k-8k.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Marvell Armada 7K/8K Platforms Device Tree Bindings
+
+maintainers:
+  - Gregory CLEMENT <gregory.clement@bootlin.com>
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    oneOf:
+
+      - description: Armada 7020 SoC
+        items:
+          - const: marvell,armada7020
+          - const: marvell,armada-ap806-dual
+          - const: marvell,armada-ap806
+
+      - description: Armada 7040 SoC
+        items:
+          - const: marvell,armada7040
+          - const: marvell,armada-ap806-quad
+          - const: marvell,armada-ap806
+
+      - description: Armada 8020 SoC
+        items:
+          - const: marvell,armada8020
+          - const: marvell,armada-ap806-dual
+          - const: marvell,armada-ap806
+
+      - description: Armada 8040 SoC
+        items:
+          - const: marvell,armada8040
+          - const: marvell,armada-ap806-quad
+          - const: marvell,armada-ap806