RFC [PATCH] piix4: don't reserve hw resources when hotplug is off

[Ani Sinha]

This is a RFC patch. This patch attempts to disable all acpi hotplug related 
hardware
initialization and amls when hotplug for both pci root port and pci bridges are
disabled on i440fx machines.

Thanks for looking at it and please provide comments. I will add unit tests 
when the final
patch is ready and accepted.

--Ani