[PATCH v2 26-3/26] PCI, x86, ACPI: Enable ioapic hotplug support with acpi host bridge.

We need to have ioapic setup before normal pci drivers. otherwise other pci driver can not setup irq. So we should not treat them as normal pci devices. Also we will need to support ioapic hotplug without pci device around. We need to call ioapic add/remove during host-bridge add/remove.

[PATCH v2 26-3/26] PCI, x86, ACPI: Enable ioapic hotplug support with acpi host bridge.

We need to have ioapic setup before normal pci drivers. otherwise other pci driver can not setup irq. So we should not treat them as normal pci devices. Also we will need to support ioapic hotplug without pci device around. We need to call ioapic add/remove during host-bridge add/remove.