scsi: ufs: add delay after reference clock ungating

This change adds a device quirk for some UFS devices which need long delay
after device reference clock is turned on but before initiation of the
state transition to STALL from a LS-MODE or from the HIBERN8 state.

Change-Id: I587dba737633034cca93b8ba839ab367dbc326e1
Signed-off-by: Can Guo <cang@codeaurora.org>