Revert "Revert "FROMLIST: scsi: ufs: Flush exception event before suspend""

This reverts commit 4b477716 which was a
revert of commit 12db3a26.  We added it
back by hand after the scsi upstream tree merge

Bug: 143632303
Cc: Sayali Lokhande <sayalil@codeaurora.org>
Cc: Asutosh Das <asutoshd@codeaurora.org>
Cc: Can Guo <cang@codeaurora.org>
Cc: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I36f2931b04f7963b7121511d6061c13a18891b77