netlink audit warning fix

scumbags!

net/netlink/af_netlink.c: In function `netlink_sendmsg':
net/netlink/af_netlink.c:908: warning: implicit declaration of function `audit_get_loginuid'

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index cb64cff..379ed06 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -49,6 +49,8 @@
 #include <linux/bitops.h>
 #include <linux/mm.h>
 #include <linux/types.h>
+#include <linux/audit.h>
+
 #include <net/sock.h>
 #include <net/scm.h>