sh: sh7785lcr/highlander/hp6xx need linux/irq.h.

More build fixes..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/boards/mach-highlander/setup.c

@@ -18,6 +18,7 @@
 #include <linux/ata_platform.h>
 #include <linux/types.h>
 #include <linux/i2c.h>
+#include <linux/irq.h>
 #include <net/ax88796.h>
 #include <asm/machvec.h>
 #include <mach/highlander.h>