Revert "driver core: refcounting fix"

This reverts commit 63ce18cfe685115ff8d341bae4c9204a79043cf0.

It was the incorrect fix and causes a reference counting bug whenever
any driver module is removed from the system. Mike Galbraith
<efault@gmx.de> is looking for the real fix for his problem.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --cc kernel/module.c
Simple merge