ithc: mark broken for kernels >= 6.10

This was fixed upstream in https://github.com/quo/ithc-linux/pull/30

However, according to their README, the driver is included in the Linux
Surface kernel already, see [1].
That may call into question the need to keep it in Nixpkgs long term,
specially when NixOS/nixos-hardware[2] already uses those patches

----
[1]: https://github.com/quo/ithc-linux/commit/0b8b45d
[2]: https://github.com/NixOS/nixos-hardware/tree/master/microsoft/surface)

pkgs/os-specific/linux/ithc/default.nix

@@ -36,6 +36,6 @@ stdenv.mkDerivation rec {
     license = licenses.publicDomain;
     maintainers = with maintainers; [ aacebedo ];
     platforms = platforms.linux;
-    broken = kernel.kernelOlder "5.9";
+    broken = kernel.kernelOlder "5.9" || kernel.kernelAtLeast "6.10";
   };
 }