staging:iio:ad7291 fix coding style

Fix indention and comment style.
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

drivers/staging/iio/adc/ad7291.c

@@ -31,7 +31,6 @@
  * is in the read mask.
  *
  * The noise-delayed bit as per datasheet suggestion is always enabled.
- *
  */
 
 /*
@@ -163,7 +162,8 @@ static irqreturn_t ad7291_event_handler(int irq, void *private)
 }
 
 static unsigned int ad7291_threshold_reg(const struct iio_chan_spec *chan,
-	enum iio_event_direction dir, enum iio_event_info info)
+					 enum iio_event_direction dir,
+					 enum iio_event_info info)
 {
 	unsigned int offset;
 
@@ -244,8 +244,10 @@ static int ad7291_read_event_config(struct iio_dev *indio_dev,
 				    enum iio_event_direction dir)
 {
 	struct ad7291_chip_info *chip = iio_priv(indio_dev);
-	/* To be enabled the channel must simply be on. If any are enabled
-	   we are in continuous sampling mode */
+	/*
+	 * To be enabled the channel must simply be on. If any are enabled
+	 * we are in continuous sampling mode
+	 */
 
 	switch (chan->type) {
 	case IIO_VOLTAGE: