phy: qcom: qmp-usbc: Add regulator init_load support

phy: qcom: qmp-usbc: Add regulator init_load support

QMP USBC PHY drivers previously did not set init_load_uA for regulators,
which could result in incorrect vote levels. This patch introduces
regulator definitions with proper init_load_uA values based on each
chip's power grid design.

QCS615 USB3 PHY was previously reusing qcm2290_usb3phy_cfg, but its
regulator requirements differ. A new qcs615_usb3phy_cfg is added to
reflect the correct settings.

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-v8-4-cbc72c88a44e@oss.qualcomm.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>