sh: Add export.h to arch/sh specific files as required.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/drivers/sh/intc/core.c b/drivers/sh/intc/core.c
index f892529..8b7a141 100644
--- a/drivers/sh/intc/core.c
+++ b/drivers/sh/intc/core.c
@@ -30,6 +30,7 @@
 #include <linux/list.h>
 #include <linux/spinlock.h>
 #include <linux/radix-tree.h>
+#include <linux/export.h>
 #include "internals.h"
 
 LIST_HEAD(intc_list);