Bpf: move under os/linux instead of bits (#6126)

* moved bpf syscall, added some bpf instructions and tests

* had to move bpf out of bits so that a freestanding target could import it

* removed line

* fixed imports
0fa3cfdb4aMatthew Knight committed on 8/22/2020, 7:08:01 PM· committed by GitHubparent9605e53
4 files changedLine totals unavailable