max8998_charger: Include linux/module.h just once

Remove the duplicate.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>

drivers/power/max8998_charger.c

@@ -21,7 +21,6 @@
 
 #include <linux/module.h>
 #include <linux/err.h>
-#include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/platform_device.h>
 #include <linux/power_supply.h>