Merge branch 'pci/resource'

  - Evaluate ACPI "PCI Boot Configuration"_DSM (Benjamin Herrenschmidt)

  - Don't auto-realloc if we're preserving firmware config (Benjamin
    Herrenschmidt)

  - Allow arm64 to reallocate resources if necessary (Benjamin
    Herrenschmidt)

  - Preserve firmware config on arm64 when desired (Benjamin Herrenschmidt)

  - Simplify resource distribution to hotplug bridges (Nicholas Johnson)

* pci/resource:
  PCI: Skip resource distribution when no hotplug bridges
  PCI: Simplify pci_bus_distribute_available_resources()
  arm64: PCI: Preserve firmware configuration when desired
  arm64: PCI: Allow resource reallocation if necessary
  PCI: Don't auto-realloc if we're preserving firmware config
  PCI/ACPI: Evaluate PCI Boot Configuration _DSM