[PATCH] parport: daisy chain end detection fix

Daisy chain end detection failed at least with older daisy chain devices that
do not implement the last device signal.

Signed-off-by: Marko Kohtala <marko.kohtala@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>