dt-bindings: arm: mediatek: Add MT8186 Ponyta Chromebook

Ponyta is a custom label Chromebook based on MT8186. It is a
self-developed project of Huaqin and has no fixed OEM.

Signed-off-by: Jianeng Ceng <[email protected]>
Reviewed-by: AngeloGioacchino Del Regno <[email protected]>
Acked-by: Krzysztof Kozlowski <[email protected]>
Link: https://lore.kernel.org/r/20250424010850.994288-2-cengjianeng@huaqin.corp-partner.google.com
Signed-off-by: AngeloGioacchino Del Regno <[email protected]>

Author: Jianeng Ceng

Documentation/devicetree/bindings/arm/mediatek.yaml

@@ -285,6 +285,13 @@ properties:
           - const: google,steelix-sku393218
           - const: google,steelix
           - const: mediatek,mt8186
+      - description: Google Ponyta
+        items:
+          - enum:
+              - google,ponyta-sku0
+              - google,ponyta-sku1
+          - const: google,ponyta
+          - const: mediatek,mt8186
       - description: Google Rusty (Lenovo 100e Chromebook Gen 4)
         items:
           - const: google,steelix-sku196609