PCI: Remove const removal cast

PCI: Remove const removal cast

__pci_bridge_assign_resources() inputs const pci_dev *bridge, but then
immediately casts const away to pass the bridge to
pdev_assign_resources_sorted().

As pdev_assign_resources_sorted() performs assignment of resources, it
is not possible to make its input parameter to const. Neither of the
__pci_bridge_assign_resources() callers requires the bridge parameter
to be const.

Thus, simply remove the out of place cast and convert the input parameter
to non-const.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20260429122617.7324-5-ilpo.jarvinen@linux.intel.com