Port syzkaller for NetBSD

Contact: tech-userlevel@
Mentors: kamil@ + ?
Duration estimate: 3 months

There is an initial support for syzkaller for NetBSD (as guest).
Resume the porting effort, execute and report kernel bugs.

Milestones:

 1. Ensure completeness of the current support.
 2. Execute the fuzzer and gather reports, narrow down problems, translate to C reproducers.
 3. Add missing features, fix bugs in the NetBSD support.