batman-adv: move routing packet initialization into corresponding file

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
diff --git a/net/batman-adv/bat_ogm.h b/net/batman-adv/bat_ogm.h
index bdd3d1e..7809b92 100644
--- a/net/batman-adv/bat_ogm.h
+++ b/net/batman-adv/bat_ogm.h
@@ -24,6 +24,9 @@
 
 #include "main.h"
 
+void bat_ogm_init(struct hard_iface *hard_iface);
+void bat_ogm_init_primary(struct hard_iface *hard_iface);
+void bat_ogm_update_mac(struct hard_iface *hard_iface);
 void bat_ogm_receive(const struct ethhdr *ethhdr, unsigned char *packet_buff,
 		     int packet_len, struct hard_iface *if_incoming);