PCI: controller: hyperv: Don't call pci_bus_assign_resources()

*This needs feedback*

I'm not sure why we called pci_bus_assign_resources() without
first sizing bridges. This replaces it with
pci_assign_unassigned_root_bus_resources() so I can deprecate
the former. It's not completely equivalent so it would be
useful to know why this was called...

Not-signed-off-by-yet...
1 file changed