scsi: mpt3sas: Revert "scsi: mpt3sas: Fix ioc->base_readl() use"

This reverts commit 7ab4d244 as it is
breaking the mpt3sas driver on big-endian machines.

Link: https://lore.kernel.org/r/20220916130111.168195-3-damien.lemoal@opensource.wdc.com


Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>