sh: compile fixes for header cleanup.

Since some header inclusion paths were cleaned up, compilation
broke. Add in the headers we need directly to build again.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

arch/sh/kernel/time.c

@@ -13,6 +13,8 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/profile.h>
+#include <linux/timex.h>
+#include <linux/sched.h>
 #include <asm/clock.h>
 #include <asm/rtc.h>
 #include <asm/timer.h>