staging: comedi: dt2815: checkpatch.pl cleanup (missing blank line)

Fix checkpatch.pl warning:

WARNING: Missing a blank line after declarations
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/dt2815.c

@@ -195,6 +195,7 @@ static int dt2815_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 		status = inb(dev->iobase + DT2815_STATUS);
 		if (status == 4) {
 			unsigned int program;
+
 			program = (it->options[4] & 0x3) << 3 | 0x7;
 			outb(program, dev->iobase + DT2815_DATA);
 			dev_dbg(dev->class_dev, "program: 0x%x (@t=%d)\n",