arm64: dts: qcom: qrb5165-rb5: enable displayport controller

Enable the onboard displayport controller, connect it to QMP PHY.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230817145940.9887-4-dmitry.baryshkov@linaro.org


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