staging: comedi: das16: change type of private data 'timer_running'

This member of the private data is a true/false flag. For aesthetics,
change the type to an unsigned int bit-field to save a bit of space.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/das16.c

@@ -444,9 +444,9 @@ struct das16_private_struct {
 	unsigned int		divisor1;
 	unsigned int		divisor2;
 	struct timer_list	timer;
-	short			timer_running;
 	unsigned long		extra_iobase;
 	unsigned int		can_burst:1;
+	unsigned int		timer_running:1;
 };
 
 static void das16_interrupt(struct comedi_device *dev)