scsi: bnx2fc: Fix a typo

s/struture/structure/

Link: https://lore.kernel.org/r/20210322063530.3588282-1-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>