[TIPC] Avoid polluting the global namespace

This patch adds a tipc_ prefix to all externally visible symbols.

Signed-off-by: Per Liden <per.liden@ericsson.com>
diff --git a/net/tipc/node_subscr.h b/net/tipc/node_subscr.h
index a3b87ac..01751c4 100644
--- a/net/tipc/node_subscr.h
+++ b/net/tipc/node_subscr.h
@@ -56,8 +56,8 @@
 	struct list_head nodesub_list;
 };
 
-void nodesub_subscribe(struct node_subscr *node_sub, u32 addr,
-		       void *usr_handle, net_ev_handler handle_down);
-void nodesub_unsubscribe(struct node_subscr *node_sub);
+void tipc_nodesub_subscribe(struct node_subscr *node_sub, u32 addr,
+			    void *usr_handle, net_ev_handler handle_down);
+void tipc_nodesub_unsubscribe(struct node_subscr *node_sub);
 
 #endif