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 libsamsung-ipc (from upstream replicant repository) * add libsamsung-ipc as dependecy for device-samsung-i9100 * change device path for loading modem firmware on i9100 * add mounting of EFS to fstab