scsi: hisi_sas: add readl poll timeout helper wrappers

scsi: hisi_sas: add readl poll timeout helper wrappers

BugLink: https://bugs.launchpad.net/bugs/1774467
It is common to use readl poll timeout helpers in the driver, so create
custom wrappers.

Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
(cherry picked from commit 9b8addf3024eb57a215d0af2e1c95cd44b94ccab linux-next)
[ dannf: Included only as a dependency for the next patch ]
Signed-off-by: dann frazier <dann.frazier@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>