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

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
diff --git a/drivers/net/iseries_veth.c b/drivers/net/iseries_veth.c
index 33613fe..f5ea39f 100644
--- a/drivers/net/iseries_veth.c
+++ b/drivers/net/iseries_veth.c
@@ -1653,6 +1653,7 @@
 	.remove = veth_remove,
 	.driver = {
 		.name = DRV_NAME,
+		.owner = THIS_MODULE,
 	}
 };