* Add `dfu-programmer` to `pacman -S` (#6618)
`dfu-programmer` now resides at `extra/dfu-programmer` and is no longer
in the AUR
* Add `--needed` option to `pacman -S` for efficiency
* Fix
* Update util/linux_install.sh
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>