Function acpi_sleep_syscore_init has no external user so it should be
static.

Signed-off-by: Jean Delvare <redacted>
Cc: "Rafael J. Wysocki" <redacted>
Cc: Len Brown <lenb@kernel.org>
---
 drivers/acpi/sleep.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-4.13-rc3.orig/drivers/acpi/sleep.c	2017-07-31 10:51:43.665159497 +0200
+++ linux-4.13-rc3/drivers/acpi/sleep.c	2017-07-31 11:34:07.180873669 +0200

@@ -870,7 +870,7 @@ static struct syscore_ops acpi_sleep_sys
 	.resume = acpi_restore_bm_rld,
 };
 
-void acpi_sleep_syscore_init(void)
+static void acpi_sleep_syscore_init(void)
 {
 	register_syscore_ops(&acpi_sleep_syscore_ops);
 }