Fix OneNAND read_oob/write_oob functions compatability

Also sync with kernel OneNAND codes

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
diff --git a/include/linux/mtd/onenand_regs.h b/include/linux/mtd/onenand_regs.h
index c8a9f3e..6a8aa28 100644
--- a/include/linux/mtd/onenand_regs.h
+++ b/include/linux/mtd/onenand_regs.h
@@ -83,6 +83,8 @@
  * Start Address 1 F100h (R/W)
  */
 #define ONENAND_DDP_SHIFT		(15)
+#define ONENAND_DDP_CHIP0		(0)
+#define ONENAND_DDP_CHIP1		(1 << ONENAND_DDP_SHIFT)
 
 /*
  * Start Address 8 F107h (R/W)