leds: Use DEVICE_ATTR_{RW, RO, WO} macros

Instead of open coding DEVICE_ATTR() defines, use the
DEVICE_ATTR_RW(), DEVICE_ATTR_WO(), and DEVICE_ATTR_RO()
macros.

This required a few functions to be renamed, but the functionality
itself is unchanged.

Reviewed-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Dwaipayan Ray <dwaipayanray1@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
diff --git a/drivers/leds/leds-lm3530.c b/drivers/leds/leds-lm3530.c
index 2f8362f..2db455e 100644
--- a/drivers/leds/leds-lm3530.c
+++ b/drivers/leds/leds-lm3530.c
@@ -346,8 +346,8 @@ static void lm3530_brightness_set(struct led_classdev *led_cdev,
 	}
 }
 
-static ssize_t lm3530_mode_get(struct device *dev,
-		struct device_attribute *attr, char *buf)
+static ssize_t mode_show(struct device *dev,
+			 struct device_attribute *attr, char *buf)
 {
 	struct led_classdev *led_cdev = dev_get_drvdata(dev);
 	struct lm3530_data *drvdata;
@@ -365,8 +365,8 @@ static ssize_t lm3530_mode_get(struct device *dev,
 	return len;
 }
 
-static ssize_t lm3530_mode_set(struct device *dev, struct device_attribute
-				   *attr, const char *buf, size_t size)
+static ssize_t mode_store(struct device *dev, struct device_attribute
+			  *attr, const char *buf, size_t size)
 {
 	struct led_classdev *led_cdev = dev_get_drvdata(dev);
 	struct lm3530_data *drvdata;
@@ -397,7 +397,7 @@ static ssize_t lm3530_mode_set(struct device *dev, struct device_attribute
 
 	return sizeof(drvdata->mode);
 }
-static DEVICE_ATTR(mode, 0644, lm3530_mode_get, lm3530_mode_set);
+static DEVICE_ATTR_RW(mode);
 
 static struct attribute *lm3530_attrs[] = {
 	&dev_attr_mode.attr,