Appointing a new reviewer for the BPF backend

[Jose E. Marchesi via Gcc]

Hello.

I would like to recommend the GCC Steering Committee to appoint David
Faust <david.fa...@oracle.com> as a REVIEWER for the BPF backend.  He
has a lot of experience hacking the backend, and I trust his judgement
to approve other's patches in the area.

Thanks!