dt-bindings: arm: mediatek: Add #reset-cells property for MT8186

We will use the infra_ao reset which is defined in mt8186-sys-clock.
The value of reset-cells is 1.

Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220523093346.28493-19-rex-bc.chen@mediatek.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Documentation/devicetree/bindings/arm/mediatek/mediatek,mt8186-sys-clock.yaml

@@ -39,6 +39,9 @@ properties:
   '#clock-cells':
     const: 1
 
+  '#reset-cells':
+    const: 1
+
 required:
   - compatible
   - reg