ASoC: cs42l56: use DEVICE_ATTR_WO macro

Use DEVICE_ATTR_WO() helper instead of plain DEVICE_ATTR(),
which makes the code a bit shorter and easier to read.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Message-Id: <20210524114503.26460-1-yuehaibing@huawei.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/cs42l56.c

@@ -1021,8 +1021,7 @@ static int cs42l56_beep_event(struct input_dev *dev, unsigned int type,
 	return 0;
 }
 
-static ssize_t cs42l56_beep_set(struct device *dev,
-			       struct device_attribute *attr,
+static ssize_t beep_store(struct device *dev, struct device_attribute *attr,
 			  const char *buf, size_t count)
 {
 	struct cs42l56_private *cs42l56 = dev_get_drvdata(dev);
@@ -1038,7 +1037,7 @@ static ssize_t cs42l56_beep_set(struct device *dev,
 	return count;
 }
 
-static DEVICE_ATTR(beep, 0200, NULL, cs42l56_beep_set);
+static DEVICE_ATTR_WO(beep);
 
 static void cs42l56_init_beep(struct snd_soc_component *component)
 {