iio: adc: axp288_adc: make use of regmap_set_bits()

Instead of using regmap_update_bits() and passing the mask twice, use
regmap_set_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-v3-6-88d1338c4cca@baylibre.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/adc/axp288_adc.c

@@ -247,8 +247,8 @@ static int axp288_adc_initialize(struct axp288_adc_info *info)
 		return ret;
 
 	/* Turn on the ADC for all channels except TS, leave TS as is */
-	return regmap_update_bits(info->regmap, AXP20X_ADC_EN1,
-				  AXP288_ADC_EN_MASK, AXP288_ADC_EN_MASK);
+	return regmap_set_bits(info->regmap, AXP20X_ADC_EN1,
+			       AXP288_ADC_EN_MASK);
 }
 
 static const struct iio_info axp288_adc_iio_info = {