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>

net/rds/rdma_transport.c

@@ -207,7 +207,7 @@ static void rds_rdma_listen_stop(void)
 	}
 }
 
-int rds_rdma_init(void)
+static int rds_rdma_init(void)
 {
 	int ret;
 
@@ -234,7 +234,7 @@ out:
 }
 module_init(rds_rdma_init);
 
-void rds_rdma_exit(void)
+static void rds_rdma_exit(void)
 {
 	/* stop listening first to ensure no new connections are attempted */
 	rds_rdma_listen_stop();