[XFRM]: xfrm_migrate() needs exporting to modules.

Needed by xfrm_user and af_key.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 825c60a..fa7ce06 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -2464,5 +2464,6 @@
 
 	return err;
 }
+EXPORT_SYMBOL(xfrm_migrate);
 #endif