scsi: mpt3sas: Fix a typo

s/encloure/enclosure/

Link: https://lore.kernel.org/r/20210322032145.2242520-1-unixbhaskar@gmail.com


Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>