Placeholder files for release 5.2 (Walnascar): migration guide and
release notes.
Define two substitutions |yocto-ver| and |yocto-codename| to avoid
mistakes in the document. Note that anchors cannot contain these so
add a note on that in a comment.
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
(From yocto-docs rev: f13492dc9474b7e22d01ab1bec2da074e972965d)
Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
