PS/2 keyboard support in mid-boot borked

[David O'Brien]

For months now PS/2 keyboard support has been broken during boot with the
GENERIC kernel.

If one has an error in /etc/fstab such that / cannot be mounted, the
kernel prompts with 

    Manual root filesystems specification:
        [examples listed]
    mountroot>

However one cannot respond to the prompt as keyboard input is ignored.
This seems to be a casualty of kbdmux(4) support being committed back in
February.  Is anyone working on fixing this?

-- 
-- David  (obrien at FreeBSD.org)