mtd: rawnand: Pass a nand_chip object to nand_release()

Let's make the raw NAND API consistent by patching all helpers to
take a nand_chip object instead of an mtd_info one.

Now is nand_release()'s turn.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
diff --git a/drivers/mtd/nand/raw/socrates_nand.c b/drivers/mtd/nand/raw/socrates_nand.c
index e335560..82ba371 100644
--- a/drivers/mtd/nand/raw/socrates_nand.c
+++ b/drivers/mtd/nand/raw/socrates_nand.c
@@ -181,7 +181,7 @@
 	if (!res)
 		return res;
 
-	nand_release(mtd);
+	nand_release(nand_chip);
 
 out:
 	iounmap(host->io_base);
@@ -194,9 +194,8 @@
 static int socrates_nand_remove(struct platform_device *ofdev)
 {
 	struct socrates_nand_host *host = dev_get_drvdata(&ofdev->dev);
-	struct mtd_info *mtd = nand_to_mtd(&host->nand_chip);
 
-	nand_release(mtd);
+	nand_release(&host->nand_chip);
 
 	iounmap(host->io_base);