[BATTERY] Every file should include the headers containing the prototypes for its global functions.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Anton Vorontsov <cbou@mail.ru>
diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c
index 249f61b..e8ad1fd 100644
--- a/drivers/power/power_supply_sysfs.c
+++ b/drivers/power/power_supply_sysfs.c
@@ -14,6 +14,8 @@
 #include <linux/ctype.h>
 #include <linux/power_supply.h>
 
+#include "power_supply.h"
+
 /*
  * This is because the name "current" breaks the device attr macro.
  * The "current" word resolves to "(get_current())" so instead of