dt-bindings: msm/dsi: Don't require vcca-supply on 14nm PHY

On some SoCs (hello SM6115) vcca-supply is not wired to any smd-rpm
or rpmh regulator, but instead powered by the VDD_MX line, which is
voted for in the DSI ctrl node.

Signed-off-by: Konrad Dybcio <[email protected]>
Acked-by: Krzysztof Kozlowski <[email protected]>
Reviewed-by: Dmitry Baryshkov <[email protected]>
Fixes: 8fc939e ("dt-bindings: msm: dsi: add yaml schemas for DSI PHY bindings")
Reviewed-by: Abhinav Kumar <[email protected]>
Patchwork: https://patchwork.freedesktop.org/patch/513555/
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Abhinav Kumar <[email protected]>

Author: konradybcio

Documentation/devicetree/bindings/display/msm/dsi-phy-14nm.yaml

@@ -39,7 +39,6 @@ required:
   - compatible
   - reg
   - reg-names
-  - vcca-supply
 
 unevaluatedProperties: false