batman-adv: Prefix unicast static inline functions with batadv_

All non-static symbols of batman-adv were prefixed with batadv_ to avoid
collisions with other symbols of the kernel. Other symbols of batman-adv
should use the same prefix to keep the naming scheme consistent.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index 0888f1e..3eb4a2e 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -869,7 +869,8 @@
 	}
 
 	if (unicast_packet->header.packet_type == BAT_UNICAST_FRAG &&
-	    frag_can_reassemble(skb, neigh_node->if_incoming->net_dev->mtu)) {
+	    batadv_frag_can_reassemble(skb,
+				       neigh_node->if_incoming->net_dev->mtu)) {
 
 		ret = batadv_frag_reassemble_skb(skb, bat_priv, &new_skb);