arm64: dts: qcom: sm8750: Add USB support for SM8750 QRD platform

arm64: dts: qcom: sm8750: Add USB support for SM8750 QRD platform

Enable USB support on SM8750 QRD variant. Add the PMIC glink node with
connector to enable role switch support.

Signed-off-by: Wesley Cheng <wesley.cheng@oss.qualcomm.com>
[Konrad: Provided diff to flatten USB node on MTP]
Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Co-developed-by: Jishnu Prakash <jishnu.prakash@oss.qualcomm.com>
Signed-off-by: Jishnu Prakash <jishnu.prakash@oss.qualcomm.com>
Signed-off-by: Krishna Kurapati <krishna.kurapati@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20251101174437.1267998-4-krishna.kurapati@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>