scsi: lpfc: Fix missing prototype for lpfc_nvmet_prep_abort_wqe()

lpfc_nvmet_prep_abort_wqe() needs to be declared static.

Link: https://lore.kernel.org/r/20201119203316.121725-1-james.smart@broadcom.com


Fixes: db7531d2 ("scsi: lpfc: Convert abort handling to SLI-3 and SLI-4 handlers")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>