All xattr APIs are being dropped, let's converge to the convention used in
high-level APIs and rename bpf_prog_attach_xattr to bpf_prog_attach_opts.
Signed-off-by: NChristy Lee <christylee@fb.com>
Signed-off-by: NAndrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220107184604.3668544-2-christylee@fb.com