When custom respositories are built (like a pure kernel.org
repo), the machine_meta SRCREV format is not applicable. As
such, we shouldn't check for the meta branch and we shouldn't
only check SRCREV_machine based revisions.
(From OE-Core rev: bf555ee3305114483aa5083cde1accd23b46a39e)
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>