This ensures that builddir is updated correctly to point to the new
selftest build directory when we're given a list of test suites instead
of a list of test cases.
(From OE-Core rev: 56e211d0f3c6cb84f5982e5de00faeeed69c1912)
Signed-off-by: Paul Barker <pbarker@konsulko.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>