staging: comedi: adv_pci1710: fix spelling mistake: "droput" -> "dropout"

There is a spelling mistake in a dev_error message. Fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/adv_pci1710.c

@@ -317,7 +317,7 @@ static int pci1710_ai_read_sample(struct comedi_device *dev,
 		chan = sample >> 12;
 		if (chan != devpriv->act_chanlist[cur_chan]) {
 			dev_err(dev->class_dev,
-				"A/D data droput: received from channel %d, expected %d\n",
+				"A/D data dropout: received from channel %d, expected %d\n",
 				chan, devpriv->act_chanlist[cur_chan]);
 			return -ENODATA;
 		}