net: Make static

Sparse asked whether these could be static.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/rxrpc/ar-connection.c b/net/rxrpc/ar-connection.c
index 3869a58..0f1218b 100644
--- a/net/rxrpc/ar-connection.c
+++ b/net/rxrpc/ar-connection.c
@@ -826,7 +826,7 @@
 /*
  * reap dead connections
  */
-void rxrpc_connection_reaper(struct work_struct *work)
+static void rxrpc_connection_reaper(struct work_struct *work)
 {
 	struct rxrpc_connection *conn, *_p;
 	unsigned long now, earliest, reap_time;
diff --git a/net/rxrpc/ar-connevent.c b/net/rxrpc/ar-connevent.c
index 1ada43d..dc5cb1e 100644
--- a/net/rxrpc/ar-connevent.c
+++ b/net/rxrpc/ar-connevent.c
@@ -126,7 +126,7 @@
  * mark a call as being on a now-secured channel
  * - must be called with softirqs disabled
  */
-void rxrpc_call_is_secure(struct rxrpc_call *call)
+static void rxrpc_call_is_secure(struct rxrpc_call *call)
 {
 	_enter("%p", call);
 	if (call) {
diff --git a/net/rxrpc/ar-security.c b/net/rxrpc/ar-security.c
index 60d1d36..dc62920e 100644
--- a/net/rxrpc/ar-security.c
+++ b/net/rxrpc/ar-security.c
@@ -40,7 +40,7 @@
 /*
  * look up an rxrpc security module
  */
-struct rxrpc_security *rxrpc_security_lookup(u8 security_index)
+static struct rxrpc_security *rxrpc_security_lookup(u8 security_index)
 {
 	struct rxrpc_security *sec = NULL;