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
* Add LG G Watch (dory) support
* Use github.com mirror instead of googlesource.com to have fixed checksum
* Fix kernel compilation and remove unnecessary initfs-hook for framebuffer settings