This has been around without being properly documented since 2019 (!!!),
and is nowadays the preferred method for enforcing license restrictions.
(From yocto-docs rev: 7a67426330decf108b8f152c3cb6cd6d167c98e4)
Signed-off-by: Alexander Kanavin <alex@linutronix.de
Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>