on touch rfkill needs to ship the /var/lib/rfkill directory or create it from a postinst script

rfkill expects to be able to put state files into /var/lib/rfkill, for this the upstart job has a mkdir -p /var/lib/rfkill line ...

on touch writable dirs need to exist on boot to be made writable. the above mkdir will just fail. the package either needs to ship this path via debian/rfkill.dirs or it needs to create it from the postinst script so that the directory is there on first boot of a phone.