leds: Rename led_set_brightness() to __led_set_brightness()

Rename leds internal interface led_set_brightness() to __led_set_brightness()
to reduce confusion between led_set_brightness() and the external interface
led_brightness_set(). led_brightness_set() cancels the timer and then calls
led_set_brightness().

Signed-off-by: Shuah Khan <shuahkhan@gmail.com>
Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
diff --git a/drivers/leds/led-core.c b/drivers/leds/led-core.c
index 31f1f78..176961b 100644
--- a/drivers/leds/led-core.c
+++ b/drivers/leds/led-core.c
@@ -45,7 +45,7 @@
 
 	/* never off - just set to brightness */
 	if (!delay_off) {
-		led_set_brightness(led_cdev, led_cdev->blink_brightness);
+		__led_set_brightness(led_cdev, led_cdev->blink_brightness);
 		return;
 	}
 
@@ -111,6 +111,6 @@
 	led_cdev->blink_delay_on = 0;
 	led_cdev->blink_delay_off = 0;
 
-	led_set_brightness(led_cdev, brightness);
+	__led_set_brightness(led_cdev, brightness);
 }
 EXPORT_SYMBOL(led_brightness_set);