Revert "FROMLIST: scsi: ufs: Add dev ref clock gating wait time support"

Revert commit 1ddc9771d5bc ("FROMLIST: scsi: ufs: Add dev ref clock gating
wait time support") due to it has major changes in its latest version.

Bug: 150892981
Change-Id: I582da6b0093e46a10e58f8f6a48448cd7ae36ac4
[can: Resolved minor conflict in drivers/scsi/ufs/ufs.h]
Signed-off-by: Can Guo <cang@codeaurora.org>