scsi: ufs: handle auto hibern8 failure

With the support of auto hibern8 it's possible that we could get
an error interrupt raised when there is no software initiated
request, handle this error by resetting the host controller
followed by a full link recovery.

Change-Id: Ice74ce7c469e96f61f78a5040f726d7bdb23e44e
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
[cang@codeaurora.org: resolved trivial merge conflicts]
Signed-off-by: Can Guo <cang@codeaurora.org>