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/rpcbind.nix

@@ -0,0 +1,46 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+{
+
+  ###### interface
+
+  options = {
+
+    services.rpcbind = {
+
+      enable = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          Whether to enable `rpcbind', an ONC RPC directory service
+          notably used by NFS and NIS, and which can be queried
+          using the rpcinfo(1) command. `rpcbind` is a replacement for
+          `portmap`.
+        '';
+      };
+
+    };
+
+  };
+
+
+  ###### implementation
+
+  config = mkIf config.services.rpcbind.enable {
+    environment.systemPackages = [ pkgs.rpcbind ];
+
+    systemd.packages = [ pkgs.rpcbind ];
+
+    systemd.services.rpcbind = {
+      wantedBy = [ "multi-user.target" ];
+    };
+
+    users.users.rpc = {
+      group = "nogroup";
+      uid = config.ids.uids.rpc;
+    };
+  };
+
+}