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/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index 7f97d57..1a5a036 100644
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -23,7 +23,7 @@
 #include <linux/irq.h>
 
 #include <mach/dma.h>
-#include <mach/pxa3xx_nand.h>
+#include <plat/pxa3xx_nand.h>
 
 #define	CHIP_DELAY_TIMEOUT	(2 * HZ/10)