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/development/blackfire.nix

@@ -0,0 +1,60 @@
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.services.blackfire-agent;
+
+  agentConfigFile = lib.generators.toINI {} {
+    blackfire =  cfg.settings;
+  };
+
+  agentSock = "blackfire/agent.sock";
+in {
+  meta = {
+    maintainers = pkgs.blackfire.meta.maintainers;
+    doc = ./blackfire.xml;
+  };
+
+  options = {
+    services.blackfire-agent = {
+      enable = lib.mkEnableOption "Blackfire profiler agent";
+      settings = lib.mkOption {
+        description = ''
+          See https://blackfire.io/docs/up-and-running/configuration/agent
+        '';
+        type = lib.types.submodule {
+          freeformType = with lib.types; attrsOf str;
+
+          options = {
+            server-id = lib.mkOption {
+              type = lib.types.str;
+              description = ''
+                Sets the server id used to authenticate with Blackfire
+
+                You can find your personal server-id at https://blackfire.io/my/settings/credentials
+              '';
+            };
+
+            server-token = lib.mkOption {
+              type = lib.types.str;
+              description = ''
+                Sets the server token used to authenticate with Blackfire
+
+                You can find your personal server-token at https://blackfire.io/my/settings/credentials
+              '';
+            };
+          };
+        };
+      };
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    environment.etc."blackfire/agent".text = agentConfigFile;
+
+    services.blackfire-agent.settings.socket = "unix:///run/${agentSock}";
+
+    systemd.packages = [
+      pkgs.blackfire
+    ];
+  };
+}