x86/PCI: for debuggability, show host bridge windows even when ignoring _CRS

We have occasional problems with PCI resource allocation, and sometimes
they could be avoided by paying attention to what ACPI tells us about
the host bridges.  This patch doesn't change the behavior, but it prints
window information that should make debugging easier.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>