tipc: add a function to get the bearer name

Introduce a new function to get the bearer name from
its id. This is used in subsequent commit.

Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/tipc/bearer.h b/net/tipc/bearer.h
index f1e6db5..43757f1 100644
--- a/net/tipc/bearer.h
+++ b/net/tipc/bearer.h
@@ -197,6 +197,7 @@
 void tipc_bearer_add_dest(struct net *net, u32 bearer_id, u32 dest);
 void tipc_bearer_remove_dest(struct net *net, u32 bearer_id, u32 dest);
 struct tipc_bearer *tipc_bearer_find(struct net *net, const char *name);
+int tipc_bearer_get_name(struct net *net, char *name, u32 bearer_id);
 struct tipc_media *tipc_media_find(const char *name);
 void tipc_bearer_reset_all(struct net *net);
 int tipc_bearer_setup(void);