batman-adv: Prefix vis 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/vis.h b/net/batman-adv/vis.h
index ee2e46e..932514e 100644
--- a/net/batman-adv/vis.h
+++ b/net/batman-adv/vis.h
@@ -25,14 +25,14 @@
 #define VIS_TIMEOUT		200000	/* timeout of vis packets
 					 * in miliseconds */
 
-int vis_seq_print_text(struct seq_file *seq, void *offset);
-void receive_server_sync_packet(struct bat_priv *bat_priv,
-				struct vis_packet *vis_packet,
-				int vis_info_len);
-void receive_client_update_packet(struct bat_priv *bat_priv,
-				  struct vis_packet *vis_packet,
-				  int vis_info_len);
-int vis_init(struct bat_priv *bat_priv);
-void vis_quit(struct bat_priv *bat_priv);
+int batadv_vis_seq_print_text(struct seq_file *seq, void *offset);
+void batadv_receive_server_sync_packet(struct bat_priv *bat_priv,
+				       struct vis_packet *vis_packet,
+				       int vis_info_len);
+void batadv_receive_client_update_packet(struct bat_priv *bat_priv,
+					 struct vis_packet *vis_packet,
+					 int vis_info_len);
+int batadv_vis_init(struct bat_priv *bat_priv);
+void batadv_vis_quit(struct bat_priv *bat_priv);
 
 #endif /* _NET_BATMAN_ADV_VIS_H_ */