Staging: comedi: usbduxfast: add comedi debug to Kconfig

This patch moves CONFIG_COMEDI_DEBUG to Kconfig and cleans up the code
as it didn't actually compile with debug enabled.

Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Cc: Bernd Porr <BerndPorr@f2s.com>
Cc: David Schleef <ds@schleef.org>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --cc drivers/staging/comedi/Kconfig
Simple merge

diff --cc drivers/staging/comedi/drivers/usbduxfast.c
Simple merge