Adjust selftests to use nullable option for state and IV arg. Reviewed-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Vadim Fedorenko <vadfed@meta.com> Link: https://lore.kernel.org/r/20240613211817.1551967-4-vadfed@meta.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>