[PATCH][ACPI-next] ACPI: battery: make function __battery_hook_unregister static

[Colin King]

From: Colin Ian King <colin.king@xxxxxxxxxxxxx>

The function __battery_hook_unregister is local to the source and does
not need to be in global scope, so make it static.

Cleans up sparse warning:
drivers/acpi/battery.c:654:6: warning: symbol '__battery_hook_unregister'
was not declared. Should it be static?

Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
---
 drivers/acpi/battery.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index cfdef4c1d097..b4580b2e8706 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -651,7 +651,7 @@ static LIST_HEAD(acpi_battery_list);
 static LIST_HEAD(battery_hook_list);
 static DEFINE_MUTEX(hook_mutex);
 
-void __battery_hook_unregister(struct acpi_battery_hook *hook, int lock)
+static void __battery_hook_unregister(struct acpi_battery_hook *hook, int lock)
 {
 	struct acpi_battery *battery;
 	/*
-- 
2.15.1