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

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/boards/mach-hp6xx/setup.c b/arch/sh/boards/mach-hp6xx/setup.c
index 475b46c..48fece7 100644
--- a/arch/sh/boards/mach-hp6xx/setup.c
+++ b/arch/sh/boards/mach-hp6xx/setup.c
@@ -15,7 +15,7 @@
 #include <asm/hd64461.h>
 #include <asm/io.h>
 #include <asm/irq.h>
-#include <asm/hp6xx.h>
+#include <mach/hp6xx.h>
 #include <cpu/dac.h>
 
 #define	SCPCR	0xa4000116