batman-adv: Prefix bitarray 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/routing.c b/net/batman-adv/routing.c
index 9cfd23c..e573c32 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -54,7 +54,7 @@
 			word_index = hard_iface->if_num * NUM_WORDS;
 			word = &(orig_node->bcast_own[word_index]);
 
-			bit_get_packet(bat_priv, word, 1, 0);
+			batadv_bit_get_packet(bat_priv, word, 1, 0);
 			orig_node->bcast_own_sum[hard_iface->if_num] =
 				bitmap_weight(word, TQ_LOCAL_WINDOW_SIZE);
 			spin_unlock_bh(&orig_node->ogm_cnt_lock);
@@ -1083,7 +1083,7 @@
 
 	/* mark broadcast in flood history, update window position
 	 * if required. */
-	if (bit_get_packet(bat_priv, orig_node->bcast_bits, seq_diff, 1))
+	if (batadv_bit_get_packet(bat_priv, orig_node->bcast_bits, seq_diff, 1))
 		orig_node->last_bcast_seqno = ntohl(bcast_packet->seqno);
 
 	spin_unlock_bh(&orig_node->bcast_seqno_lock);