phy: qcom: qmp-usbc: Add QCS615 USB/DP PHY config and DP mode support

phy: qcom: qmp-usbc: Add QCS615 USB/DP PHY config and DP mode support

Add QCS615-specific configuration for USB/DP PHY, including DP init
routines, voltage swing tables, and platform data. Add compatible
"qcs615-qmp-usb3-dp-phy".

Note: SW_PORTSELECT handling for orientation flip is not implemented
due to QCS615 fixed-orientation design and non-standard lane mapping.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Xiangxu Yin <xiangxu.yin@oss.qualcomm.com>
Link: https://patch.msgid.link/20251215-add-displayport-support-for-qcs615-platform-v8-12-cbc72c88a44e@oss.qualcomm.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>