scsi: bfa: bfa_core.c: make bfa_isr_rspq() static

Fix the following sparse warning:

drivers/scsi/bfa/bfa_core.c:712:1: warning: symbol 'bfa_isr_rspq' was
not declared. Should it be static?

Link: https://lore.kernel.org/r/20200407032202.36789-3-yanaijie@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/bfa/bfa_core.c

@@ -708,7 +708,7 @@ bfa_reqq_resume(struct bfa_s *bfa, int qid)
 	}
 }
 
-bfa_boolean_t
+static bfa_boolean_t
 bfa_isr_rspq(struct bfa_s *bfa, int qid)
 {
 	struct bfi_msg_s *m;