PCI: Replace cxl_error_is_native() with pcie_aer_is_native()

PCI: Replace cxl_error_is_native() with pcie_aer_is_native()

The AER driver includes a CXL support function cxl_error_is_native(). This
function adds no additional value from pcie_aer_is_native().

Simplify the codebase by removing cxl_error_is_native() and replace
occurrences of cxl_error_is_native() with pcie_aer_is_native().

Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20260114182055.46029-7-terry.bowman@amd.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>