hisi_sas: add dependency for HAS_IOMEM

Not every arch has io, so fix build by adding necessary dependency.

Signed-off-by: John Garry <john.garry@huawei.com>
Suggested-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
1 file changed