kernel-yocto: Stop the build if defconfig is missing
The bberror does not stop the build correctly, this should be a
bbfatal_log to ensure the failure correctly stops the build and logs
the failure.
Part of
[YOCTO #12162]
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit
44ff06635e7f575e67b7ebba5d6900b8ddbc4a06)
Signed-off-by: Armin Kuster <akuster808@gmail.com>
