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/unicast.h b/net/batman-adv/unicast.h
index 87f8f89..9257b83 100644
--- a/net/batman-adv/unicast.h
+++ b/net/batman-adv/unicast.h
@@ -33,7 +33,7 @@
 			 struct hard_iface *hard_iface,
 			 const uint8_t dstaddr[]);
 
-static inline int frag_can_reassemble(const struct sk_buff *skb, int mtu)
+static inline int batadv_frag_can_reassemble(const struct sk_buff *skb, int mtu)
 {
 	const struct unicast_frag_packet *unicast_packet;
 	int uneven_correction = 0;