mtd: nand: orion_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>
diff --git a/drivers/mtd/nand/orion_nand.c b/drivers/mtd/nand/orion_nand.c
index 64785f4..ee83749 100644
--- a/drivers/mtd/nand/orion_nand.c
+++ b/drivers/mtd/nand/orion_nand.c
@@ -124,7 +124,7 @@
 	}
 
 	mtd->priv = nc;
-	mtd->owner = THIS_MODULE;
+	mtd->dev.parent = &pdev->dev;
 
 	nc->priv = board;
 	nc->IO_ADDR_R = nc->IO_ADDR_W = io_base;