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/iw.c b/net/rds/iw.c
index 56808ca..5a9676f 100644
--- a/net/rds/iw.c
+++ b/net/rds/iw.c
@@ -56,7 +56,7 @@
 DEFINE_SPINLOCK(iw_nodev_conns_lock);
 LIST_HEAD(iw_nodev_conns);
 
-void rds_iw_add_one(struct ib_device *device)
+static void rds_iw_add_one(struct ib_device *device)
 {
 	struct rds_iw_device *rds_iwdev;
 	struct ib_device_attr *dev_attr;
@@ -124,7 +124,7 @@
 	kfree(dev_attr);
 }
 
-void rds_iw_remove_one(struct ib_device *device)
+static void rds_iw_remove_one(struct ib_device *device)
 {
 	struct rds_iw_device *rds_iwdev;
 	struct rds_iw_cm_id *i_cm_id, *next;