[media] cx231xx: Use wake_up_interruptible() instead of wake_up_interruptible_nr()

While looking at use cases of the wake queues in order to add support
for simple wait queues, I noticed that there was only a single user of
wake_up_interruptible_nr(), and that use was doing a single task wake
up. Have that user use the proper wake_up_interruptible() instead, and
perhaps we can even remove the function wake_up_interruptible_nr().

Signed-off-by: Steven Rostedt <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/usb/cx231xx/cx231xx-video.c

···
 			v4l2_fh_exit(&fh->fh);
 			kfree(fh);
 			dev->users--;
-			wake_up_interruptible_nr(&dev->open, 1);
+			wake_up_interruptible(&dev->open);
 			return 0;
 		}
 
···
 	}
 	v4l2_fh_exit(&fh->fh);
 	kfree(fh);
-	wake_up_interruptible_nr(&dev->open, 1);
+	wake_up_interruptible(&dev->open);
 	return 0;
 }