iio: adc: ad4130: make use of regmap_clear_bits()

Instead of using regmap_update_bits() and passing val = 0, use
regmap_clear_bits().
Suggested-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://patch.msgid.link/20240617-review-v3-4-88d1338c4cca@baylibre.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/adc/ad4130.c

@@ -1883,8 +1883,8 @@ static int ad4130_setup(struct iio_dev *indio_dev)
 	if (ret)
 		return ret;
 
-	ret = regmap_update_bits(st->regmap, AD4130_FIFO_CONTROL_REG,
-				 AD4130_FIFO_CONTROL_HEADER_MASK, 0);
+	ret = regmap_clear_bits(st->regmap, AD4130_FIFO_CONTROL_REG,
+				AD4130_FIFO_CONTROL_HEADER_MASK);
 	if (ret)
 		return ret;