Staging: comedi: fix printk issue in cb_pcidas64.c

This is a patch to the cb_pcidas64.c file that fixes up a
printk warning found by the checkpatch.pl tool.

Converted printks to dev_<levels> and Removed unnecessary
printk statements.
Signed-off-by: Ravishankar Karkala Mallikarjunayya <ravishankar.km@greenturtles.in>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/comedi/drivers/cb_pcidas64.c

@@ -1881,8 +1881,6 @@ static int detach(struct comedi_device *dev)
 {
 	unsigned int i;
 
-	printk("comedi%d: cb_pcidas: remove\n", dev->minor);
-
 	if (dev->irq)
 		free_irq(dev->irq, dev);
 	if (priv(dev)) {
@@ -2092,7 +2090,8 @@ static int ai_config_calibration_source(struct comedi_device *dev,
 	else
 		num_calibration_sources = 8;
 	if (source >= num_calibration_sources) {
-		printk("invalid calibration source: %i\n", source);
+		dev_dbg(dev->hw_dev, "invalid calibration source: %i\n",
+			source);
 		return -EINVAL;
 	}
 
@@ -2923,7 +2922,7 @@ static void pio_drain_ai_fifo_16(struct comedi_device *dev)
 		}
 
 		if (num_samples < 0) {
-			printk(" cb_pcidas64: bug! num_samples < 0\n");
+			dev_err(dev->hw_dev, "cb_pcidas64: bug! num_samples < 0\n");
 			break;
 		}