dt-bindings: display: panel: add common dual-link schema

Add schema with common properties shared among dual-link panel ICs.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240325103611.28240-1-krzysztof.kozlowski@linaro.org


Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240325103611.28240-1-krzysztof.kozlowski@linaro.org