drivers/edac-new-i82443bxgz-mc-driver: mark as broken

It will claim the PCI devices from under intel_agp.ko's feet.  Greg is brewing
some fix for that.

Cc: Douglas Thompson <dougthompson@xmission.com>
Cc: Tim Small <tim@buttersideup.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>