cxl/acpi: Move add_host_bridge_uport() after cxl_get_chbs()

Just moving code to reorder functions to later share cxl_get_chbs()
with add_host_bridge_uport().

This makes changes in the next patch visible. No other changes at all.

Signed-off-by: Robert Richter <rrichter@amd.com>
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20230622205523.85375-9-terry.bowman@amd.com


Signed-off-by: Dan Williams <dan.j.williams@intel.com>