scsi: lpfc: Make lpfc_defer_acc_rsp static

Fix sparse warning:

drivers/scsi/lpfc/lpfc_nportdisc.c:344:1: warning:
 symbol 'lpfc_defer_acc_rsp' was not declared. Should it be static?

Link: https://lore.kernel.org/r/20200107014956.41748-1-yuehaibing@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/lpfc/lpfc_nportdisc.c

@@ -340,7 +340,7 @@ lpfc_defer_pt2pt_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *link_mbox)
  * This routine is only called if we are SLI4, acting in target
  * mode and the remote NPort issues the PLOGI after link up.
  **/
-void
+static void
 lpfc_defer_acc_rsp(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
 	struct lpfc_vport *vport = pmb->vport;