Finalize the release note for the 5.1 release (styhead).
Add enhancements, changes, removals, license changes, and migration
notes for this release by going over the git commit log of
openembedded-core, bitbake and meta-yocto.
(From yocto-docs rev: 65618b0588053d2c4325d995482957b660f5e104)
Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>