Always fall back to unique file/prog comparison if user's custom order
specs are ambiguous. This ensures stable output no matter what.
Signed-off-by: NAndrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20221103055304.2904589-5-andrii@kernel.orgSigned-off-by: NAlexei Starovoitov <ast@kernel.org>