powerpc: set the driver.owner field for all vio drivers

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
diff --git a/drivers/char/viotape.c b/drivers/char/viotape.c
index 8fc1115..d92a056 100644
--- a/drivers/char/viotape.c
+++ b/drivers/char/viotape.c
@@ -993,14 +993,15 @@
 	{ "viotape", "" },
 	{ "", "" }
 };
-
 MODULE_DEVICE_TABLE(vio, viotape_device_table);
+
 static struct vio_driver viotape_driver = {
 	.id_table = viotape_device_table,
 	.probe = viotape_probe,
 	.remove = viotape_remove,
 	.driver = {
 		.name = "viotape",
+		.owner = THIS_MODULE,
 	}
 };