scsi: hisi_sas: free slots after hardreset

scsi: hisi_sas: free slots after hardreset

BugLink: https://bugs.launchpad.net/bugs/1695999
After hardreset, we clear up IOs of remote disks, so we need to free
those slots in LLDD.

Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
(cherry picked from commit 6131243acd2c3aafa041935dcef44eb8255eeb46)
Signed-off-by: dann frazier <dann.frazier@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>