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
- rename 'ch-de' keymap to 'ch' as in X keyboard config file
- add PMOS_NO_OUTPUT_REDIRECT to kernel cmdline (fixes debug-shell)
- add all keymap files in initramfs
- load default us keymap in initramfs