ARM: mach-shmobile: bonito: make sure static function

The function bonito_add_early_devices() needs to be static.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

arch/arm/mach-shmobile/board-bonito.c

@@ -486,7 +486,7 @@ static void __init bonito_earlytimer_init(void)
 	shmobile_earlytimer_init();
 }
 
-void __init bonito_add_early_devices(void)
+static void __init bonito_add_early_devices(void)
 {
 	r8a7740_add_early_devices();