batman-adv: Prefix bridge_loop_avoidance non-static functions with batadv_

batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 11bfe53..16e866a 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -162,7 +162,7 @@
 		goto dropped;
 	}
 
-	if (bla_tx(bat_priv, skb, vid))
+	if (batadv_bla_tx(bat_priv, skb, vid))
 		goto dropped;
 
 	/* Register the client MAC in the transtable */
@@ -309,7 +309,7 @@
 	/* Let the bridge loop avoidance check the packet. If will
 	 * not handle it, we can safely push it up.
 	 */
-	if (bla_rx(bat_priv, skb, vid))
+	if (batadv_bla_rx(bat_priv, skb, vid))
 		goto out;
 
 	netif_rx(skb);