staging: comedi: adl_pci9118: tidy up analog output subdevice init

For aesthetics, add some whitespace to the analog output subdevice init.
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/adl_pci9118.c

@@ -1889,6 +1889,7 @@ static int pci9118_common_attach(struct comedi_device *dev, int disable_irq,
 		devpriv->ai_ns_min = 3000;
 	}
 
+	/* Analog Output subdevice */
 	s = &dev->subdevices[1];
 	s->type		= COMEDI_SUBD_AO;
 	s->subdev_flags	= SDF_WRITABLE | SDF_GROUND | SDF_COMMON;