iio: adc: intel_mrfld_adc: 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>
Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://patch.msgid.link/20240617-review-v3-12-88d1338c4cca@baylibre.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/adc/intel_mrfld_adc.c

@@ -81,8 +81,8 @@ static int mrfld_adc_single_conv(struct iio_dev *indio_dev,
 
 	reinit_completion(&adc->completion);
 
-	regmap_update_bits(regmap, BCOVE_MADCIRQ, BCOVE_ADCIRQ_ALL, 0);
-	regmap_update_bits(regmap, BCOVE_MIRQLVL1, BCOVE_LVL1_ADC, 0);
+	regmap_clear_bits(regmap, BCOVE_MADCIRQ, BCOVE_ADCIRQ_ALL);
+	regmap_clear_bits(regmap, BCOVE_MIRQLVL1, BCOVE_LVL1_ADC);
 
 	ret = regmap_read_poll_timeout(regmap, BCOVE_GPADCREQ, req,
 				       !(req & BCOVE_GPADCREQ_BUSY),