mtd: nand: jz4740_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/jz4740_nand.c

@@ -434,7 +434,7 @@ static int jz_nand_probe(struct platform_device *pdev)
 	mtd		= &nand->mtd;
 	chip		= &nand->chip;
 	mtd->priv	= chip;
-	mtd->owner	= THIS_MODULE;
+	mtd->dev.parent = &pdev->dev;
 	mtd->name	= "jz4740-nand";
 
 	chip->ecc.hwctl		= jz_nand_hwctl;