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>

drivers/scsi/hisi_sas/Kconfig

 config SCSI_HISI_SAS
 	tristate "HiSilicon SAS"
-	depends on HAS_DMA
+	depends on HAS_DMA && HAS_IOMEM
 	depends on ARM64 || COMPILE_TEST
 	select SCSI_SAS_LIBSAS
 	select BLK_DEV_INTEGRITY