PCI: Increase Resizable BAR support from 512 GB to 128 TB

Per PCIe r6.0, sec 7.8.6.2, devices can advertise Resizable BAR sizes up to
128 TB in the Resizable BAR Capability register.  Larger sizes can be
advertised via the Capability register, but that requires an API change.

Update pci_rebar_get_possible_sizes() and pbus_size_mem() to increase the
sizes we currently support from 512 GB to 128 TB.

Link: https://lore.kernel.org/r/20250307053535.44918-1-daizhiyuan@phytium.com.cn


Signed-off-by: Zhiyuan Dai <daizhiyuan@phytium.com.cn>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>