leds: leds-adp5520: Fix checkpatch warnings

Fixes the following type of checkpatch warnings:
WARNING: please, no space before tabs
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>

drivers/leds/leds-adp5520.c

@@ -5,10 +5,10 @@
  *
  * Loosely derived from leds-da903x:
  * Copyright (C) 2008 Compulab, Ltd.
- * 	Mike Rapoport <mike@compulab.co.il>
+ *	Mike Rapoport <mike@compulab.co.il>
  *
  * Copyright (C) 2006-2008 Marvell International Ltd.
- * 	Eric Miao <eric.miao@marvell.com>
+ *	Eric Miao <eric.miao@marvell.com>
  *
  * Licensed under the GPL-2 or later.
  */