dt-bindings: arm: vt8500: Add VIA APC Rock/Paper boards

APC Rock is a development board based on WonderMedia WM8950 SoC
released around 2013. Paper is the same as Rock but lacking a
VGA port and shipped with a recycled cardboard case.

While at that, put myself as the maintainer, given that Tony is
unavailable as of lately.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Alexey Charkov <alchark@gmail.com>
Link: https://lore.kernel.org/r/20250425-apc_paper_binding-v5-1-3aef49e97332@gmail.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Documentation/devicetree/bindings/arm/vt8500.yaml

@@ -7,14 +7,13 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 title: VIA/Wondermedia VT8500 Platforms
 
 maintainers:
-  - Tony Prisk <linux@prisktech.co.nz>
-description: test
+  - Alexey Charkov <alchark@gmail.com>
 
 properties:
   $nodename:
     const: '/'
   compatible:
-    items:
+    oneOf:
       - enum:
           - via,vt8500
           - wm,wm8505
@@ -22,4 +21,9 @@ properties:
           - wm,wm8750
           - wm,wm8850
 
+      - description: VIA APC Rock and Paper boards
+        items:
+          - const: via,apc-rock
+          - const: wm,wm8950
+
 additionalProperties: true