Alad  filed a deletion request for linux-galliumos-braswell :
See maintainer comment:
"As the GalliumOS kernel releases no longer treat the braswell
platform specially from v4.12.0, this package has been superseded by
Some braswell machines may still require or benefit from the GalliumOS
kernel patches/config but hopefully the official arch kernel releases
will be good enough for most of us starting from 4.12."