staging:iio:ad7150: Align arguments to match open parenthesis

This fixes the following checkpatch.pl CHECK: Alignment should match
open parenthesis

Signed-off-by: Tom Lebreux <tomlebreux@cock.li>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/staging/iio/cdc/ad7150.c

@@ -124,8 +124,9 @@ static int ad7150_read_raw(struct iio_dev *indio_dev,
 }
 
 static int ad7150_read_event_config(struct iio_dev *indio_dev,
-	const struct iio_chan_spec *chan, enum iio_event_type type,
-	enum iio_event_direction dir)
+				    const struct iio_chan_spec *chan,
+				    enum iio_event_type type,
+				    enum iio_event_direction dir)
 {
 	int ret;
 	u8 threshtype;