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

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/boards/mach-systemh/setup.c b/arch/sh/boards/mach-systemh/setup.c
index ee78af8..219fd80 100644
--- a/arch/sh/boards/mach-systemh/setup.c
+++ b/arch/sh/boards/mach-systemh/setup.c
@@ -16,7 +16,7 @@
  */
 #include <linux/init.h>
 #include <asm/machvec.h>
-#include <asm/systemh7751.h>
+#include <mach/systemh7751.h>
 
 extern void make_systemh_irq(unsigned int irq);