dt-bindings: arm: marvell: Convert marvell,armada375 boards to DT schema

Convert Marvell Armada-375 based boards to DT schema format.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

Documentation/devicetree/bindings/arm/marvell/armada-375.txt

@@ -1,9 +0,0 @@
-Marvell Armada 375 Platforms Device Tree Bindings
--------------------------------------------------
-
-Boards with a SoC of the Marvell Armada 375 family shall have the
-following property:
-
-Required root node property:
-
-compatible: must contain "marvell,armada375"

Documentation/devicetree/bindings/arm/marvell/marvell,armada375.yaml

@@ -0,0 +1,21 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/marvell/marvell,armada375.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Marvell Armada 375 Platform
+
+maintainers:
+  - Andrew Lunn <andrew@lunn.ch>
+  - Gregory Clement <gregory.clement@bootlin.com>
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    items:
+      - const: marvell,a375-db
+      - const: marvell,armada375
+
+additionalProperties: true