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/virtualisation/container-config.nix

@@ -0,0 +1,31 @@
+{ config, pkgs, lib, ... }:
+
+with lib;
+
+{
+
+  config = mkIf config.boot.isContainer {
+
+    # Disable some features that are not useful in a container.
+    nix.optimise.automatic = mkDefault false; # the store is host managed
+    services.udisks2.enable = mkDefault false;
+    powerManagement.enable = mkDefault false;
+    documentation.nixos.enable = mkDefault false;
+
+    networking.useHostResolvConf = mkDefault true;
+
+    # Containers should be light-weight, so start sshd on demand.
+    services.openssh.startWhenNeeded = mkDefault true;
+
+    # Shut up warnings about not having a boot loader.
+    system.build.installBootLoader = lib.mkDefault "${pkgs.coreutils}/bin/true";
+
+    # Not supported in systemd-nspawn containers.
+    security.audit.enable = false;
+
+    # Use the host's nix-daemon.
+    environment.variables.NIX_REMOTE = "daemon";
+
+  };
+
+}