pxa3xx_nand: move pxa3xx_nand.h common into plat directory

Since the same nand controller is shared between ARCH_PXA and ARCH_MMP. Move
the pxa3xx_nand.h from mach directory to plat directoy.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Cc: David Woodhouse <david.woodhouse@intel.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
diff --git a/arch/arm/mach-pxa/zylonite.c b/arch/arm/mach-pxa/zylonite.c
index 09784d3..8fcb694 100644
--- a/arch/arm/mach-pxa/zylonite.c
+++ b/arch/arm/mach-pxa/zylonite.c
@@ -31,7 +31,7 @@
 #include <mach/mmc.h>
 #include <mach/ohci.h>
 #include <mach/pxa27x_keypad.h>
-#include <mach/pxa3xx_nand.h>
+#include <plat/pxa3xx_nand.h>
 
 #include "devices.h"
 #include "generic.h"