tools/bpf: expose functions btf_ext__* as API functions

LIBBPF_API const char *btf__name_by_offset(const struct btf *btf, __u32 offset);

LIBBPF_API int btf__get_from_id(__u32 id, struct btf **btf);

struct btf_ext *btf_ext__new(__u8 *data, __u32 size);

void btf_ext__free(struct btf_ext *btf_ext);

int btf_ext__reloc_func_info(const struct btf *btf,

LIBBPF_API struct btf_ext *btf_ext__new(__u8 *data, __u32 size);

LIBBPF_API void btf_ext__free(struct btf_ext *btf_ext);

LIBBPF_API int btf_ext__reloc_func_info(const struct btf *btf,

					const struct btf_ext *btf_ext,

					const char *sec_name, __u32 insns_cnt,

			     void **func_info, __u32 *func_info_len);

int btf_ext__reloc_line_info(const struct btf *btf,

					void **func_info, __u32 *cnt);

LIBBPF_API int btf_ext__reloc_line_info(const struct btf *btf,

					const struct btf_ext *btf_ext,

					const char *sec_name, __u32 insns_cnt,

					void **line_info, __u32 *cnt);

__u32 btf_ext__func_info_rec_size(const struct btf_ext *btf_ext);

__u32 btf_ext__line_info_rec_size(const struct btf_ext *btf_ext);

LIBBPF_API __u32 btf_ext__func_info_rec_size(const struct btf_ext *btf_ext);

LIBBPF_API __u32 btf_ext__line_info_rec_size(const struct btf_ext *btf_ext);

#ifdef __cplusplus

} /* extern "C" */

		bpf_map_lookup_elem_flags;

		bpf_object__find_map_fd_by_name;

		bpf_get_link_xdp_id;

		btf_ext__free;

		btf_ext__func_info_rec_size;

		btf_ext__line_info_rec_size;

		btf_ext__new;

		btf_ext__reloc_func_info;

		btf_ext__reloc_line_info;

} LIBBPF_0.0.1;