This is the same as c8b3a16e38ad5ee75f267fc7afb7e1c0cc4cca64, but for the original Raspbberry Pi. Related to !2731
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