This patch fixes a problem that "cat /proc/ioports" loops
on some IA64 machines that use quirk_io_region(). The problem
is caused by redundant resource claim by quirk_io_region()
and pcibios_fixup_device_resources(). The patch prevents 
this condition and is written by Matthew Wilcox.
Signed-off-by: Maeda Naoaki <maeda.naoaki@jp.fujitsu.com>