pci, ACPI, iommu: Enhance pci_root to support DMAR device hotplug
pci, ACPI, iommu: Enhance pci_root to support DMAR device hotplug

Finally enhance pci_root driver to support DMAR device hotplug when
hot-plugging PCI host bridges.

Signed-off-by: Jiang Liu <68ee766e574f18b34b683085865827393efe88bd@linux.intel.com>
Reviewed-by: Yijing Wang <ac442ed3e729ed4f09d087e9c319e1c47c72d6f1@huawei.com>
Acked-by: Bjorn Helgaas <f10ec01be0c6b54271af5c550cd257810bdf3268@google.com>
Signed-off-by: Joerg Roedel <61aff96566804ea1da8a65de5bcc892ce07caceb@suse.de>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs