[OSS-Tools] [PATCH dt-utils] README: clarify the need for "real names" with the DCO process

[Roland Hieber <rhi@pengutronix.de>]

The Linux kernel recently changed the wording of "real names" to "known
identities" (see commit d4563201f33a022fc035, 2023-02-26, Linus
Torvalds: "Documentation: simplify and clarify DCO contribution example
language"). In fact, we already credit contributors in our Git history
by names that are probably not their "real names". Follow the reasoning
in the kernel guidelines in that regard, and adapt our wording
accordingly.

Link: https://git.kernel.org/torvalds/c/d4563201f33a022fc035
Signed-off-by: Roland Hieber <rhi@pengutronix.de>
---
 README | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/README b/README
index acfd2c171286..428c459f7f79 100644
--- a/README
+++ b/README
@@ -57,8 +57,8 @@ By adding a Signed-off-by line (e.g. using `git commit -s`) saying
 
   Signed-off-by: Random J Developer <random@developer.example.org>
 
-(using your real name and e-mail address), you state that your contributions
-are in line with the DCO.
+(using your known identity), you state that your contributions are in line with
+the DCO.
 
 License
 -------
-- 
2.39.2