[PATCH -next] power_supply: Fix sparse non static symbol warning

[weiyj_lk]

From: Wei Yongjun <yongjun_wei@xxxxxxxxxxxxxxxxx>

Fixes the following sparse warnings:

drivers/power/power_supply_core.c:540:5: warning:
 symbol '__power_supply_register' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <yongjun_wei@xxxxxxxxxxxxxxxxx>
---
 drivers/power/power_supply_core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c
index 5a5a24e..078afd6 100644
--- a/drivers/power/power_supply_core.c
+++ b/drivers/power/power_supply_core.c
@@ -537,7 +537,8 @@ static void psy_unregister_cooler(struct power_supply *psy)
 }
 #endif
 
-int __power_supply_register(struct device *parent, struct power_supply *psy, bool ws)
+static int __power_supply_register(struct device *parent,
+				   struct power_supply *psy, bool ws)
 {
 	struct device *dev;
 	int rc;

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