DRAFT: d/initramfs: fix verbose/physical keyboard output to tty

Closes all currently open osk-sdl bugs: https://bugs.debian.org/cgi-bin/pkgreport.cgi?archive=0;dist=unstable;ordering=normal;repeatmerged=0;src=osk-sdl

TODO:

• Fix lintian warnings (mostly debconf translatability).
• confirm that use of debconf meets Debian's standards.