bna: Fixed build break for allyesconfig

This is the patch to fix the build break caused by multiple
definitions of symbols between Brocade's FC/FCOE driver(BFA)
and 10G Networking Driver(BNA).

Changes are:

1. locally used functions are made static 

2. unused functions are removed

3. using unique namespaces for the function names that must be
globally visible

Signed-off-by: Debashis Dutt <ddutt@brocade.com>
Signed-off-by: Rasesh Mody <rmody@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/bna/bnad_ethtool.c b/drivers/net/bna/bnad_ethtool.c
index 7e630f5..b337bd9 100644
--- a/drivers/net/bna/bnad_ethtool.c
+++ b/drivers/net/bna/bnad_ethtool.c
@@ -276,7 +276,7 @@
 	if (ioc_attr) {
 		memset(ioc_attr, 0, sizeof(*ioc_attr));
 		spin_lock_irqsave(&bnad->bna_lock, flags);
-		bfa_ioc_get_attr(&bnad->bna.device.ioc, ioc_attr);
+		bfa_nw_ioc_get_attr(&bnad->bna.device.ioc, ioc_attr);
 		spin_unlock_irqrestore(&bnad->bna_lock, flags);
 
 		strncpy(drvinfo->fw_version, ioc_attr->adapter_attr.fw_ver,