Function rebpf::libbpf::bpf_create_map_in_map

pub unsafe extern "C" fn bpf_create_map_in_map(
    map_type: u32, 
    name: *const i8, 
    key_size: i32, 
    inner_map_fd: i32, 
    max_entries: i32, 
    map_flags: u32
) -> i32