scsi: mpt3sas: Remove usage of dma_get_required_mask() API

Remove the usage of dma_get_required_mask() API.  Directly set the DMA mask
to 63/64 if the system is a 64bit machine.

Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Link: https://lore.kernel.org/r/20221028091655.17741-2-sreekanth.reddy@broadcom.com


Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>