arm: at91 move board.h to arch/arm/mach-at91

as this is only used board old style board

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/mach-at91/board-stamp9g20.c

@@ -25,10 +25,10 @@
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 
-#include <mach/board.h>
 #include <mach/at91_aic.h>
 #include <mach/at91sam9_smc.h>
 
+#include "board.h"
 #include "sam9_smc.h"
 #include "generic.h"