sh: mach-ecovec24: need asm/clock.h.

Fixes up build failures.

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/boards/mach-ecovec24/setup.c b/arch/sh/boards/mach-ecovec24/setup.c
index 40decfe..7da274a 100644
--- a/arch/sh/boards/mach-ecovec24/setup.c
+++ b/arch/sh/boards/mach-ecovec24/setup.c
@@ -24,6 +24,7 @@
 #include <asm/heartbeat.h>
 #include <asm/sh_eth.h>
 #include <asm/sh_keysc.h>
+#include <asm/clock.h>
 #include <cpu/sh7724.h>
 
 /*