bpf: enhance BPF_OBJ_GET_INFO_BY_FD decoder

bpf: enhance BPF_OBJ_GET_INFO_BY_FD decoder

* bpf.c (print_bpf_map_info): Print only those fields that are
present in the structure, as it has been growing over time.
(print_bpf_prog_info): Likewise.  Print map_ids field as an array
of uint32_t instead of uint64_t; print "name" field.

Co-Authored-by: Dmitry V. Levin <ldv@altlinux.org>