scsi: lpfc: use min() to improve code

Use min_t() to reduce the code in lpfc_sli4_driver_resource_setup() and
lpfc_nvme_prep_io_cmd(), and improve readability.

Signed-off-by: Qianfeng Rong <rongqianfeng@vivo.com>
Link: https://lore.kernel.org/r/20250815121609.384914-4-rongqianfeng@vivo.com


Reviewed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>