[SCSI] bfa: use standards defined timeout for ELS/CT

Use standards defined 2 * RA_TOV as a timeout for ELS Request retries.
And standards defined 3 * RA_TOV as a timeout for FC-CT Request retries.
Also, added a check to send RPSC2 to a Brocade Fabric only.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/bfa/scn.c b/drivers/scsi/bfa/scn.c
index 8fe09ba..8a60129 100644
--- a/drivers/scsi/bfa/scn.c
+++ b/drivers/scsi/bfa/scn.c
@@ -218,7 +218,7 @@
 
 	bfa_fcxp_send(fcxp, NULL, port->fabric->vf_id, port->lp_tag, BFA_FALSE,
 		      FC_CLASS_3, len, &fchs, bfa_fcs_port_scn_scr_response,
-		      (void *)scn, FC_MAX_PDUSZ, FC_RA_TOV);
+		      (void *)scn, FC_MAX_PDUSZ, FC_ELS_TOV);
 
 	bfa_sm_send_event(scn, SCNSM_EVENT_SCR_SENT);
 }