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
* Progress can be followed in #1206
* Kernel boots with device tree from LineageOS and can
be installed by android recovery zip
* Networking comes up at boot but there's not display yet