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
All device ports have been changed in one of the previous commits,
so do one pkgrel bump for all of them using:
$ pmbootstrap pkgrel_bump device-*
[ci:ignore-count]