Broken samples/bpf build? (bisected)

[Björn Töpel <bjorn.topel@xxxxxxxxx>]

The samples/bpf/ build seems to be broken for bpf/master. I've
bisected it to commit 394053f4a4b3 ("kbuild: make single targets work
more correctly").

I'll take a look, but if someone with better kbuild-fu already had a
look, please let me know.


Cheers,
Björn