rds: make local functions/variables static

The RDS protocol has lots of functions that should be
declared static. rds_message_get/add_version_extension is
removed since it defined but never used.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/rds/connection.c b/net/rds/connection.c
index 870992e..9334d89 100644
--- a/net/rds/connection.c
+++ b/net/rds/connection.c
@@ -88,7 +88,7 @@
  * and receiving over this connection again in the future.  It is up to
  * the transport to have serialized this call with its send and recv.
  */
-void rds_conn_reset(struct rds_connection *conn)
+static void rds_conn_reset(struct rds_connection *conn)
 {
 	rdsdebug("connection %pI4 to %pI4 reset\n",
 	  &conn->c_laddr, &conn->c_faddr);