backlight: adp8860: Add blank line after declarations

Fixed the following checkpatch warning.

  WARNING: Missing a blank line after declarations
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/video/backlight/adp8860_bl.c

@@ -181,6 +181,7 @@ static int adp8860_clr_bits(struct i2c_client *client, int reg, uint8_t bit_mask
 static void adp8860_led_work(struct work_struct *work)
 {
 	struct adp8860_led *led = container_of(work, struct adp8860_led, work);
+
 	adp8860_write(led->client, ADP8860_ISC1 - led->id + 1,
 			 led->new_brightness >> 1);
 }
@@ -362,6 +363,7 @@ static int adp8860_bl_set(struct backlight_device *bl, int brightness)
 static int adp8860_bl_update_status(struct backlight_device *bl)
 {
 	int brightness = bl->props.brightness;
+
 	if (bl->props.power != FB_BLANK_UNBLANK)
 		brightness = 0;
 
@@ -499,6 +501,7 @@ static ssize_t adp8860_bl_l1_daylight_max_store(struct device *dev,
 {
 	struct adp8860_bl *data = dev_get_drvdata(dev);
 	int ret = kstrtoul(buf, 10, &data->cached_daylight_max);
+
 	if (ret)
 		return ret;