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

Fixes up build failures.
Signed-off-by: NKuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

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>
 
 /*