iio: accel: adxl372: use devm_iio_triggered_buffer_setup_ext()

This change switches to the new devm_iio_triggered_buffer_setup_ext()
function and removes the iio_buffer_set_attrs() call, for assigning the
HW FIFO attributes to the buffer.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20200929125949.69934-5-alexandru.ardelean@analog.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/accel/adxl372.c

@@ -1211,15 +1211,14 @@ int adxl372_probe(struct device *dev, struct regmap *regmap,
 		return ret;
 	}
 
-	ret = devm_iio_triggered_buffer_setup(dev,
-					      indio_dev, NULL,
-					      adxl372_trigger_handler,
-					      &adxl372_buffer_ops);
+	ret = devm_iio_triggered_buffer_setup_ext(dev,
+						  indio_dev, NULL,
+						  adxl372_trigger_handler,
+						  &adxl372_buffer_ops,
+						  adxl372_fifo_attributes);
 	if (ret < 0)
 		return ret;
 
-	iio_buffer_set_attrs(indio_dev->buffer, adxl372_fifo_attributes);
-
 	if (st->irq) {
 		st->dready_trig = devm_iio_trigger_alloc(dev,
 							 "%s-dev%d",