Loading the uio_netx kernel module fails with 'no symbol version for __uio_register_device'.

Loading the uio_netx kernel module fails due to missing symbol version information of referenced functions exported by other kernel modules (e.g. __uio_xxx()).
Enabled symbol verification (via CONFIG_MODVERSIONS) in the kernel configuration, requires publishing of the all exported kernel symbols when building a kernel module as an external module.
Workaround:
This can be fixed by setting the 'make' variable via KBUILD_EXTRA_SYMBOLS=[path_to_modulesymvers_file] to the Modules.symvers file of the requested symbols/or kernel.