This ports the following barebox commit:

| commit 63b9aad
| Author: Ulrich Ölmann <u.oelmann@pengutronix.de>
| Date:   Fri Oct 12 08:48:48 2018 +0200
|
|     state: fix documentation of state_new_from_node()
|
|     Commit a66a8d79871c ("state: remove unused arguments from
|     state_new_from_node()") removed a little bit too much.
|
|     Signed-off-by: Ulrich Ölmann <u.oelmann@pengutronix.de>
|     Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Signed-off-by: Ulrich Ölmann <u.oelmann@pengutronix.de>
Signed-off-by: Roland Hieber <rhi@pengutronix.de>