The git version of pmbootstrap generates kernels without _config. Because devicepkg-dev expects this variable, it should be set to what pmbootstrap has replaced the variable with unless the variable is manually set. Signed-off-by: Aster Boese <asterboese@mailbox.org> Part-of: <https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/9347>