Without this helpers like bpf_printk() or bpf_map_update() are not
available, making anything but change of bytes impossible to do.

Link: https://lore.kernel.org/r/20240608-hid_bpf_struct_ops-v3-14-6ac6ade58329@kernel.orgSigned-off-by: Benjamin Tissoires <bentiss@kernel.org>