arm: imx: make various struct sys_timer static

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/mach-imx/mach-mx31lite.c b/arch/arm/mach-imx/mach-mx31lite.c
index 0abef5f..686c605 100644
--- a/arch/arm/mach-imx/mach-mx31lite.c
+++ b/arch/arm/mach-imx/mach-mx31lite.c
@@ -283,7 +283,7 @@
 	mx31_clocks_init(26000000);
 }
 
-struct sys_timer mx31lite_timer = {
+static struct sys_timer mx31lite_timer = {
 	.init	= mx31lite_timer_init,
 };