Merge branch 'pci/host/fu740'

- Drop redundant '-gpios' from DT GPIO lookup (Ben Dooks)

- Force 2.5GT/s for initial device probe to workaround enumeration issue on
  SiFive Unmatched board (Ben Dooks)

* pci/host/fu740:
  PCI: fu740: Force 2.5GT/s for initial device probe
  PCI: fu740: Drop redundant '-gpios' from DT GPIO lookup