Now the user can choose to install the proprietary firmware along with
the downstream or a (close to) mainline kernel.
[ci:skip-build]: already built successfully in CI
At the moment we have Contributor: lines on some packages (but not all of them),
but often they don't represent the actual contributors to the package very well.
E.g. when we added them retroactively to the device packages we only added
the initial contributor (which isn't necessarily the person
who made most of the work for a device...)
The Git history is the most representative source for figuring out
who contributed to a package, so there is no reason to duplicate that
into the APKBUILD.
[skip ci]: way too many packages
These files are just a copy paste of the regular OnePlus 5 ones with
adjusted codename, display name and screen height.
The used kernel is linux-oneplus-msm8998 (shared with cheeseburger).
