chipsec: mark broken on hardened kernels older than 5.4

pkgs/tools/security/chipsec/default.nix

···
     homepage = "https://github.com/chipsec/chipsec";
     maintainers = with maintainers; [ johnazoidberg erdnaxe ];
     platforms = [ "x86_64-linux" ] ++ lib.optional (!withDriver) "x86_64-darwin";
+    # https://github.com/chipsec/chipsec/issues/1793
+    broken = withDriver && kernel.kernelOlder "5.4" && kernel.isHardened;
   };
 }