scsi: mpt3sas: Use true, false for ioc->use_32bit_dma

Fix the following coccicheck warning:

drivers/scsi/mpt3sas/mpt3sas_base.c:7202:1-19: WARNING: Assignment of
0/1 to bool variable

Link: https://lore.kernel.org/r/20200430121738.15151-1-yanaijie@huawei.com


Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>