staging:iio:adc:naming: dev_info to indio_dev for consistency

We had a random missmatch of these two.  Lets pick the most common
and get rid of the other.

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/iio/adc/ad7476_core.c b/drivers/staging/iio/adc/ad7476_core.c
index 9b050ce..1953dbf 100644
--- a/drivers/staging/iio/adc/ad7476_core.c
+++ b/drivers/staging/iio/adc/ad7476_core.c
@@ -32,24 +32,24 @@
 	return (st->data[0] << 8) | st->data[1];
 }
 
-static int ad7476_read_raw(struct iio_dev *dev_info,
+static int ad7476_read_raw(struct iio_dev *indio_dev,
 			   struct iio_chan_spec const *chan,
 			   int *val,
 			   int *val2,
 			   long m)
 {
 	int ret;
-	struct ad7476_state *st = iio_priv(dev_info);
+	struct ad7476_state *st = iio_priv(indio_dev);
 	unsigned int scale_uv;
 
 	switch (m) {
 	case 0:
-		mutex_lock(&dev_info->mlock);
-		if (iio_buffer_enabled(dev_info))
-			ret = ad7476_scan_from_ring(dev_info);
+		mutex_lock(&indio_dev->mlock);
+		if (iio_buffer_enabled(indio_dev))
+			ret = ad7476_scan_from_ring(indio_dev);
 		else
 			ret = ad7476_scan_direct(st);
-		mutex_unlock(&dev_info->mlock);
+		mutex_unlock(&indio_dev->mlock);
 
 		if (ret < 0)
 			return ret;