aya/bpf/aya-bpf
Dave Tucker 05c1586202 bpf: bpf_probe_read_kernel fields in pt_regs
As it turns out, the verifier gets upset if you try to read the values
directly without using bpf_probe_read.

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
..
src bpf: bpf_probe_read_kernel fields in pt_regs
Cargo.toml bpf: add aya-bpf-bindings
build.rs bpf: re-reun build.rs if env changed