With this driver, legacy device drivers (floppy ACPI driver,
COM ACPI driver, and ACPI motherboard driver) which
directly use ACPI can be removed, since now we have unified PNP
interface for legacy ACPI enumerated devices.

Originally by Matthieu Castet
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>