scsi: ufs: handle LINERESET error only during hibern8 enter

If LINERESET was detected during hibern8 exit, HW recovers
link back to original speed automatically by PA_INIT sequence,
hence remove the full reset.

Change-Id: I181adf4580c0febed817047a40c1d0621d9c9824
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
[cang@codeaurora.org: resolved trivial merge conflicts]
Signed-off-by: Can Guo <cang@codeaurora.org>