phy: qcom-qmp: Rename UFS PCS QMP v4 registers

The UFS QMP v4 PHY has a largely different register set versus USB and
PCIe.  Rename the register offsets to denote that the value is specific for
the UFS PCS register.

Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
Link: https://lore.kernel.org/r/1588636467-23409-6-git-send-email-wcheng@codeaurora.org


Signed-off-by: Vinod Koul <vkoul@kernel.org>