net: ipv6: remove nowait arg to rt6_fill_node

All callers of rt6_fill_node pass 0 for nowait arg. Remove the arg and
simplify rt6_fill_node accordingly.

rt6_fill_node passes the nowait of 0 to ip6mr_get_route. Remove the
nowait arg from it as well.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/mroute6.h b/include/linux/mroute6.h
index 19a1c0c..ce44e3e 100644
--- a/include/linux/mroute6.h
+++ b/include/linux/mroute6.h
@@ -116,7 +116,7 @@ struct mfc6_cache {
 
 struct rtmsg;
 extern int ip6mr_get_route(struct net *net, struct sk_buff *skb,
-			   struct rtmsg *rtm, int nowait, u32 portid);
+			   struct rtmsg *rtm, u32 portid);
 
 #ifdef CONFIG_IPV6_MROUTE
 extern struct sock *mroute6_socket(struct net *net, struct sk_buff *skb);