To harmonize the common codebase this ports the remaining hunks of the following
dt-utils commit, as the residual hunks have independently already been done
before in barebox commit 1afbf6b5680e ("state: fix compile warnings for dev_err
expansion"):

| commit 9f1db73
| Author: Philipp Rosenberger <p.rosenberger@linutronix.de>
| Date:   Thu Oct 18 09:17:23 2018 +0200
|
|     Fix compiler warnings about wrong type conversion in messages.
|
|     These warning were observed with gcc-6.3 on x86-64.
|
|     Signed-off-by: Philipp Rosenberger <p.rosenberger@linutronix.de>
|     Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Signed-off-by: Ulrich Ölmann <u.oelmann@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>