scsi: mpt3sas: use true,false for bool variables

Fix the following coccicheck warning:

drivers/scsi/mpt3sas/mpt3sas_base.c:416:6-14: WARNING: Assignment of 0/1
to bool variable
drivers/scsi/mpt3sas/mpt3sas_base.c:485:2-10: WARNING: Assignment of 0/1
to bool variable

Link: https://lore.kernel.org/r/20200421034101.28273-1-yanaijie@huawei.com
Acked-by: Suganath Prabu <suganath-prabu.subramani@broadcom.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/mpt3sas/mpt3sas_base.c

@@ -413,7 +413,7 @@ static void _clone_sg_entries(struct MPT3SAS_ADAPTER *ioc,
 {
 	Mpi2SGESimple32_t *sgel, *sgel_next;
 	u32  sgl_flags, sge_chain_count = 0;
-	bool is_write = 0;
+	bool is_write = false;
 	u16 i = 0;
 	void __iomem *buffer_iomem;
 	phys_addr_t buffer_iomem_phys;
@@ -482,7 +482,7 @@ static void _clone_sg_entries(struct MPT3SAS_ADAPTER *ioc,
 
 	if (le32_to_cpu(sgel->FlagsLength) &
 			(MPI2_SGE_FLAGS_HOST_TO_IOC << MPI2_SGE_FLAGS_SHIFT))
-		is_write = 1;
+		is_write = true;
 
 	for (i = 0; i < MPT_MIN_PHYS_SEGMENTS + ioc->facts.MaxChainDepth; i++) {