drivers/sh: Add export.h for EXPORT_SYMBOL to intc/virq.c

This is exporting symbols and will fail to build once we remove
the implicit presence of module.h
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>

drivers/sh/intc/virq.c

@@ -14,6 +14,7 @@
 #include <linux/list.h>
 #include <linux/radix-tree.h>
 #include <linux/spinlock.h>
+#include <linux/export.h>
 #include "internals.h"
 
 static struct intc_map_entry intc_irq_xlate[NR_IRQS];