uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

nixos/modules/services/networking/oidentd.nix

@@ -0,0 +1,44 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+{
+
+  ###### interface
+
+  options = {
+
+    services.oidentd.enable = mkOption {
+      default = false;
+      type = types.bool;
+      description = ''
+        Whether to enable ‘oidentd’, an implementation of the Ident
+        protocol (RFC 1413).  It allows remote systems to identify the
+        name of the user associated with a TCP connection.
+      '';
+    };
+
+  };
+
+
+  ###### implementation
+
+  config = mkIf config.services.oidentd.enable {
+    systemd.services.oidentd = {
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+      serviceConfig.Type = "forking";
+      script = "${pkgs.oidentd}/sbin/oidentd -u oidentd -g nogroup";
+    };
+
+    users.users.oidentd = {
+      description = "Ident Protocol daemon user";
+      group = "oidentd";
+      uid = config.ids.uids.oidentd;
+    };
+
+    users.groups.oidentd.gid = config.ids.gids.oidentd;
+
+  };
+
+}