Merge branch 'pci/host/mt7621'

- Declare mt7621_pci_ops static (Sergio Paracuellos)

- Give pcibios_root_bridge_prepare() access to host bridge windows (Sergio
  Paracuellos)

- Move MIPS I/O coherency unit setup from driver to
  pcibios_root_bridge_prepare() (Sergio Paracuellos)

- Add missing MODULE_LICENSE() (Sergio Paracuellos)

- Allow COMPILE_TEST for all arches (Sergio Paracuellos)

* pci/host/mt7621:
  PCI: mt7621: Allow COMPILE_TEST for all arches
  PCI: mt7621: Add missing MODULE_LICENSE()
  PCI: mt7621: Move MIPS setup to pcibios_root_bridge_prepare()
  PCI: Let pcibios_root_bridge_prepare() access bridge->windows
  PCI: mt7621: Declare mt7621_pci_ops static