scsi: bfa: Staticify local functions

scsi: bfa: Staticify local functions

These calls are not invoked externally.

Fixes the following W=1 kernel build warning(s):

 drivers/scsi/bfa/bfa_port.c:760:1: warning: no previous prototype for ‘bfa_cee_isr’ [-Wmissing-prototypes]
 760 | bfa_cee_isr(void *cbarg, struct bfi_mbmsg_s *m)
 | ^~~~~~~~~~~
 drivers/scsi/bfa/bfa_port.c:796:1: warning: no previous prototype for ‘bfa_cee_notify’ [-Wmissing-prototypes]
 796 | bfa_cee_notify(void *arg, enum bfa_ioc_event_e event)
 | ^~~~~~~~~~~~~~

Link: https://lore.kernel.org/r/20200723122446.1329773-8-lee.jones@linaro.org
Cc: Anil Gurumurthy <anil.gurumurthy@qlogic.com>
Cc: Sudarsana Kalluru <sudarsana.kalluru@qlogic.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>