mtd: nand: jz4780: Use mtd_set_ooblayout() to set the ooblayout

The mtd_set_ooblayout() accesor has been added to hide internals of
mtd_info and ease future refactoring. Call mtd_set_ooblayout() instead of
directly accessing mtd->ooblayout.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Harvey Hunt <harveyhuntnexus@gmail.com>
diff --git a/drivers/mtd/nand/jz4780_nand.c b/drivers/mtd/nand/jz4780_nand.c
index a39bb70..8bc835f 100644
--- a/drivers/mtd/nand/jz4780_nand.c
+++ b/drivers/mtd/nand/jz4780_nand.c
@@ -205,7 +205,7 @@
 		return -EINVAL;
 	}
 
-	mtd->ooblayout = &nand_ooblayout_lp_ops;
+	mtd_set_ooblayout(mtd, &nand_ooblayout_lp_ops);
 
 	return 0;
 }