openingd: remember if we negotiated option_anchor_outputs, to put in the db.

And hand it through to channeld just like option_static_remotekey.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

lightningd/channel_control.c

@@ -575,6 +575,7 @@ void peer_start_channeld(struct channel *channel,
 				      /* Set at channel open, even if not
 				       * negotiated now! */
 				      channel->option_static_remotekey,
+				      channel->option_anchor_outputs,
 				      IFDEV(ld->dev_fast_gossip, false),
 				      IFDEV(dev_fail_process_onionpacket, false),
 				      pbases);