mtd: nand: vf610: use the mtd instance embedded in struct nand_chip

struct nand_chip now embeds an mtd device. Make use of this mtd instance.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

drivers/mtd/nand/vf610_nfc.c

@@ -156,7 +156,6 @@ enum vf610_nfc_variant {
 };
 
 struct vf610_nfc {
-	struct mtd_info mtd;
 	struct nand_chip chip;
 	struct device *dev;
 	void __iomem *regs;
@@ -171,7 +170,10 @@ struct vf610_nfc {
 	u32 ecc_mode;
 };
 
-#define mtd_to_nfc(_mtd) container_of(_mtd, struct vf610_nfc, mtd)
+static inline struct vf610_nfc *mtd_to_nfc(struct mtd_info *mtd)
+{
+	return container_of(mtd_to_nand(mtd), struct vf610_nfc, chip);
+}
 
 static struct nand_ecclayout vf610_nfc_ecc45 = {
 	.eccbytes = 45,
@@ -674,8 +676,8 @@ static int vf610_nfc_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	nfc->dev = &pdev->dev;
-	mtd = &nfc->mtd;
 	chip = &nfc->chip;
+	mtd = nand_to_mtd(chip);
 
 	mtd->priv = chip;
 	mtd->owner = THIS_MODULE;