libbpf returns error codes from the kernel unmodified, and we don't understand them so non-fatal ones are handled as hard errors. Add a translation helper, and start by translating 524 to EOPNOTSUPP, which is returned when nsresourced tries to use LSM BPF hooks that are not implemented on a given arch (in this case, arm64 is misssing trampolines). Fixes https://github.com/systemd/systemd/issues/32170
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