libbpf: Implement BTFGen

[kernel-patches-bot]

Pull request for series with
subject: libbpf: Implement BTFGen
version: 5
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=609663

[kernel-patches-bot]

Master branch: b3dddab
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=609663
version: 5

Pull request is NOT updated. Failed to apply https://patchwork.kernel.org/project/netdevbpf/list/?series=609663
error message:

Cmd('git') failed due to: exit code(128)
  cmdline: git am -3
  stdout: 'Applying: libbpf: Implement changes needed for BTFGen in bpftool
Patch failed at 0001 libbpf: Implement changes needed for BTFGen in bpftool
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".'
  stderr: 'error: sha1 information is lacking or useless (tools/lib/bpf/libbpf.c).
error: could not build fake ancestor
hint: Use 'git am --show-current-patch=diff' to see the failed patch'

conflict:

[kernel-patches-bot]

At least one diff in series https://patchwork.kernel.org/project/netdevbpf/list/?series=609663 expired. Closing PR.