OE/Yocto is migration towards new override syntax,
current master (upcomming honister release) will not
tolerate "_" as override operator.
New override syntax will be backported to
dunfell, gatesgarth, hardknott releases.
Signed-off-by: Bartłomiej Burdukiewicz <bartlomiej.burdukiewicz@gmail.com>
Use the upstream U-Boot and simply bbappend the changes that are needed.
U-Boot 2018.09 no longer builds against master.
Signed-off-by: Trevor Woerner <twoerner@gmail.com>