staging: comedi: das08.c: reformat remaining comments

Use the preferred style for block comments.  Squash double spaces after
the comment opening sequence for single-line comments.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/das08.c

@@ -354,7 +354,8 @@ int das08_common_attach(struct comedi_device *dev, unsigned long iobase)
 	/* ai */
 	if (thisboard->ai_nbits) {
 		s->type = COMEDI_SUBD_AI;
-		/* XXX some boards actually have differential
+		/*
+		 * XXX some boards actually have differential
 		 * inputs instead of single ended.
 		 * The driver does nothing with arefs though,
 		 * so it's no big deal.