AR is now captured are part of the build environment. If we don't
subtitute our on-target variant for the cross version, we'll end
up getting a prompted configure when preparing to build modules.
(From OE-Core rev: 09bf40bf890a9d56c8365eb93a4baf467dc3308c)
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>