Merge branch 'bpf-prog-digest'

Merge branch 'bpf-prog-digest'

Daniel Borkmann says:

====================
Minor BPF cleanups and digest

First two patches are minor cleanups, and the third one adds
a prog digest. For details, please see individual patches.
After this one, I have a set with tracepoint support that makes
use of this facility as well.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>