This ports the following barebox commit:

| commit 4983191
| Author: Sascha Hauer <s.hauer@pengutronix.de>
| Date:   Thu May 4 12:27:21 2017 +0200
|
|     state: Make an alias mandatory
|
|     The userspace barebox-state utility gets confused when no alias exists.
|     Make the alias mandatory, so that people make it right^tm without having
|     to ask.
|
|     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>