scsi: mpt3sas: Configure reply post queue depth, DMA and sgl tablesize.

This configures shost max sector to 128, single reply descriptor post
queue, sgl table size to 16 and 32 bit DMA for MPI Endpoint and it
supports 64K as max IO.

Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>