libbpf: Fix typo in btf__dedup@LIBBPF_0.0.2 definition

The btf__dedup_deprecated name was misspelled in the definition of the
compat symbol for btf__dedup. This leads it to be missing from the
shared library.

This fixes it.

Fixes: 957d350a8b94 ("libbpf: Turn btf_dedup_opts into OPTS-based struct")
Signed-off-by: Vincent Minet <vincent@vincent-minet.net>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211210063112.80047-1-vincent@vincent-minet.net
(cherry picked from commit c7dedfe)

src/btf.c

@@ -3075,7 +3075,7 @@ int btf__dedup_v0_6_0(struct btf *btf, const struct btf_dedup_opts *opts)
 	return libbpf_err(err);
 }
 
-COMPAT_VERSION(bpf__dedup_deprecated, btf__dedup, LIBBPF_0.0.2)
+COMPAT_VERSION(btf__dedup_deprecated, btf__dedup, LIBBPF_0.0.2)
 int btf__dedup_deprecated(struct btf *btf, struct btf_ext *btf_ext, const void *unused_opts)
 {
 	LIBBPF_OPTS(btf_dedup_opts, opts, .btf_ext = btf_ext);