mtd: nand: atmel_nand: show parent device in sysfs

Fix a bug where parent device symlinks aren't shown in sysfs.

While at it, make use of the default owner value set by mtdcore.
Signed-off-by: Frans Klaver <fransklaver@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

drivers/mtd/nand/atmel_nand.c

@@ -2126,7 +2126,7 @@ static int atmel_nand_probe(struct platform_device *pdev)
 
 	nand_chip->priv = host;		/* link the private data structures */
 	mtd->priv = nand_chip;
-	mtd->owner = THIS_MODULE;
+	mtd->dev.parent = &pdev->dev;
 
 	/* Set address of NAND IO lines */
 	nand_chip->IO_ADDR_R = host->io_base;