leds-lp55xx: use lp55xx common deinit function

 Two separate de-init functions are merged into one common function.
 And it is used in err_post_init of lp55xx_init_device().

Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
diff --git a/drivers/leds/leds-lp55xx-common.h b/drivers/leds/leds-lp55xx-common.h
index ffedc77..908b00a 100644
--- a/drivers/leds/leds-lp55xx-common.h
+++ b/drivers/leds/leds-lp55xx-common.h
@@ -84,7 +84,8 @@
 extern int lp55xx_update_bits(struct lp55xx_chip *chip, u8 reg,
 			u8 mask, u8 val);
 
-/* common device init functions */
+/* common device init/deinit functions */
 extern int lp55xx_init_device(struct lp55xx_chip *chip);
+extern void lp55xx_deinit_device(struct lp55xx_chip *chip);
 
 #endif /* _LEDS_LP55XX_COMMON_H */