phy: qcom-ufs-qrbtc-msmskunk: add phy support for msmskunk emulation

This change adds support for UFS PHY supported on msmskunk emulation
platform.

Change-Id: I8d8d4dcc81d14c7c015ba0c38aa7b7c9fc085158
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
[cang@codeaurora.org: Resolved trivial merge conflicts
and fixed kernel compilation errors]
Signed-off-by: Can Guo <cang@codeaurora.org>