recipe dirs normally have the name of the (main) package and the official name is u-boot
(From OE-Core rev: e9899d52ade2181bd97dcf79bec64650e8b0f718)
Signed-off-by: Frans Meulenbroeks <fransmeulenbroeks@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>