Always rescan the devices upon echo'ing something to
available_resources_setup_done.  This is needed for proper "coldplug" support.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>