This enables the out of tree redpine wifi driver currently included in
the Purism kernel that these devices boot.
There's at least one MR @ purism needed before the mainline wifi driver
can be used:
https://source.puri.sm/Librem5/linux-next/merge_requests/66
This is based on input from Sebastian Krzyszkowi.
mesa-git-dri-gallium covers all Gallium DRI drivers
(including lima and kmsro).
Also mesa-git-dri-gallium now depends directly on all relevant
mesa-git subpackages, so the subpackages do not need to be specified
in each device APKBUILD anymore.