ARM: mach-shmobile: make sure static declaration on g3evm

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/arm/mach-shmobile/board-g3evm.c b/arch/arm/mach-shmobile/board-g3evm.c
index a8f20cb..95ccb94 100644
--- a/arch/arm/mach-shmobile/board-g3evm.c
+++ b/arch/arm/mach-shmobile/board-g3evm.c
@@ -100,7 +100,7 @@
 };
 
 /* USBHS */
-void usb_host_port_power(int port, int power)
+static void usb_host_port_power(int port, int power)
 {
 	if (!power) /* only power-on supported for now */
 		return;