arm64: dts: qcom: sc8180x-flex-5g: correct panel ports

Panel takes only one port:

  sc8180x-lenovo-flex-5g.dtb: panel: 'ports' does not match any of the regexes: 'pinctrl-[0-9]+'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230617171541.286957-12-krzysztof.kozlowski@linaro.org


Signed-off-by: Bjorn Andersson <andersson@kernel.org>