BUG() on missing IO or memory resources in pcibios_fixup_bus is rude, remove
it.  Also use list_for_each_entry.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>