clocksource: sh_mtu2/cmt_register() should be static.

Neither of these need to be exported, so just make them static.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/drivers/clocksource/sh_mtu2.c b/drivers/clocksource/sh_mtu2.c
index ef02185..d1ae754 100644
--- a/drivers/clocksource/sh_mtu2.c
+++ b/drivers/clocksource/sh_mtu2.c
@@ -232,8 +232,8 @@
 	clockevents_register_device(ced);
 }
 
-int sh_mtu2_register(struct sh_mtu2_priv *p, char *name,
-		     unsigned long clockevent_rating)
+static int sh_mtu2_register(struct sh_mtu2_priv *p, char *name,
+			    unsigned long clockevent_rating)
 {
 	if (clockevent_rating)
 		sh_mtu2_register_clockevent(p, name, clockevent_rating);