aya/bpf/aya-bpf
Dave Tucker 8a6fe4a640 bpf: Rename SkSkbContext to SkBuffContext
This is necessary since the context is used in many other program types
and not just in SK_SKB programs.

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
..
src bpf: Rename SkSkbContext to SkBuffContext
Cargo.toml bpf: add aya-bpf-bindings
build.rs aya-bpf: implement argument coercion for pt_regs and BTF programs