When controller runs into fatal error, I/Os get stuck with no response,
handler event is defined to complete the pending I/Os (SAS task and
internal task) and also perform the cleanup for the drives.

Link: https://lore.kernel.org/r/20210415103352.3580-7-Viswas.G@microchip.comAcked-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Ruksar Devadi <Ruksar.devadi@microchip.com>
Signed-off-by: Viswas G <Viswas.G@microchip.com>
Signed-off-by: Ashokkumar N <Ashokkumar.N@microchip.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>