arm64: dts: qcom: sm8350: add port subnodes in dwc3 node

Add ports subnodes in dwc3 node to avoid repeating the
same description in each board DT.

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230130-topic-sm8450-upstream-pmic-glink-v5-6-552f3b721f9e@linaro.org