An earlier patch cherry-picked from master used : for override. Change
it to use _ for hardknott.
(From OE-Core rev: 7e569186820163d731cbb14f8c25ce6a2cc45dc9)
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>