dt-bindings: display: novatek, nt35950: define ports

The panel-common schema does not define what "ports" property is, so
bring the definition by referencing the panel-common-dual.yaml. Panels
can be single- or dual-link, thus require only one port@0.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20240325103611.28240-2-krzysztof.kozlowski@linaro.orgSigned-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240325103611.28240-2-krzysztof.kozlowski@linaro.org

Documentation/devicetree/bindings/display/panel/novatek,nt35950.yaml

@@ -19,7 +19,7 @@ description: |
   either bilinear interpolation or pixel duplication.
 
 allOf:
-  - $ref: panel-common.yaml#
+  - $ref: panel-common-dual.yaml#
 
 properties:
   compatible:
@@ -59,6 +59,7 @@ required:
   - avee-supply
   - dvdd-supply
   - vddio-supply
+  - ports
 
 additionalProperties: false