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/security/sslmate-agent.nix

@@ -0,0 +1,32 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.sslmate-agent;
+
+in {
+  meta.maintainers = with maintainers; [ wolfangaukang ];
+
+  options = {
+    services.sslmate-agent = {
+      enable = mkEnableOption "sslmate-agent, a daemon for managing SSL/TLS certificates on a server";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = with pkgs; [ sslmate-agent ];
+
+    systemd = {
+      packages = [ pkgs.sslmate-agent ];
+      services.sslmate-agent = {
+        wantedBy = [ "multi-user.target" ];
+        serviceConfig = {
+          ConfigurationDirectory = "sslmate-agent";
+          LogsDirectory = "sslmate-agent";
+          StateDirectory = "sslmate-agent";
+        };
+      };
+    };
+  };
+}