sh: Migrate common board headers to mach-common/.

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

arch/sh/boards/mach-highlander/irq-r7785rp.c

@@ -12,7 +12,7 @@
 #include <linux/init.h>
 #include <linux/irq.h>
 #include <linux/io.h>
-#include <asm/r7780rp.h>
+#include <mach/highlander.h>
 
 enum {
 	UNUSED = 0,