Right now we have two similar implementations of setting up a USB mass
storage gadget, in init_functions.sh and as separate script for the
debug-shell. Given that init_functions.sh is available in debug-shell
anyway, unify both in a common setup_usb_storage_configfs() function.
Having this included in the initramfs debug-shell by default (without
installing postmarketos-mkinitfs-hook-debug-shell) also simplifies
recovery, since you can set up the USB storage for repairing the flashed
postmarketOS installation in case of boot failures. The size overhead is
minimal, since this has no extra dependencies.
Since we've now finally removed telnetd from the main initramfs but we
still need telnetd for the debug-shell, add it to the files for that
hook.
Also make sure the list of files is sorted.
Stephan Gerhold