Merge branches 'acpi-dock', 'acpi-scan' and 'acpi-pci-hotplug'

* acpi-dock:
  ACPI / dock: Use acpi_device_enumerated() to check if dock is present

* acpi-scan:
  ACPI / container: Fix error code path in container_device_attach()

* acpi-pci-hotplug:
  ACPI / hotplug / PCI: Relax the checking of _STA return values