phy: qcom: phy-qcom-snps-eusb2: Update init sequence per HPG 1.0.2

phy: qcom: phy-qcom-snps-eusb2: Update init sequence per HPG 1.0.2

The eUSB2 HPG version 1.0.2 asks to clear bits [7:1] on all targets.
Implement that change in the driver to follow.

See also https://lore.kernel.org/linux-arm-msm/7d073433-f254-4d75-a68b-d184f900294a@oss.qualcomm.com/

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250715-sm7635-eusb-phy-v3-4-6c3224085eb6@fairphone.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>