scsi: ufs-qcom: put the UFS phy in reset state when link is off

When UFS link is in off, put the UFS phy in reset state to reduce the
leakage from PHY.

Change-Id: I27473cbb5be19b331e0a0258c5a20546317d064c
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>