Prepare for better device categorization by moving everything to testing
subdir first.
[skip-ci]: chicken-egg problem: passing pmaports CI depends on pmbootstrap MR
depends on this MR
Related: postmarketos#16
The LineageOS kernel integrates the Wi-Fi driver, so reconfigure with
the Lineage defconfig and copy the Wi-Fi options over to our defconfig.
This doesn't get Wi-Fi working yet, but it gives a good starting point.