Revert "driver core: move knode_driver into private structure"

This reverts commit 93e746db183b3bdbbda67900f79b5835f9cb388f.

Turns out that device_initialize shouldn't fail silently.
This series needs to be reworked in order to get into proper
shape.

Reported-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/include/linux/device.h b/include/linux/device.h
index 8987f47..c66ceb1 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -366,6 +366,7 @@
 };
 
 struct device {
+	struct klist_node	knode_driver;
 	struct klist_node	knode_bus;
 	struct device		*parent;