Staging: comedi: addi-data: APCI1710_82x54 cleanups

Coding style cleanups, but it needs some rework to make it sane.

Cc: David Schleef <ds@schleef.org>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>