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/tests/kubernetes/e2e.nix

@@ -0,0 +1,40 @@
+{ system ? builtins.currentSystem, pkgs ? import ../../.. { inherit system; } }:
+with import ./base.nix { inherit system; };
+let
+  domain = "my.zyx";
+  certs = import ./certs.nix { externalDomain = domain; kubelets = ["machine1" "machine2"]; };
+  kubeconfig = pkgs.writeText "kubeconfig.json" (builtins.toJSON {
+    apiVersion = "v1";
+    kind = "Config";
+    clusters = [{
+      name = "local";
+      cluster.certificate-authority = "${certs.master}/ca.pem";
+      cluster.server = "https://api.${domain}";
+    }];
+    users = [{
+      name = "kubelet";
+      user = {
+        client-certificate = "${certs.admin}/admin.pem";
+        client-key = "${certs.admin}/admin-key.pem";
+      };
+    }];
+    contexts = [{
+      context = {
+        cluster = "local";
+        user = "kubelet";
+      };
+      current-context = "kubelet-context";
+    }];
+  });
+
+  base = {
+    name = "e2e";
+    inherit domain certs;
+    test = ''
+      $machine1->succeed("e2e.test -kubeconfig ${kubeconfig} -provider local -ginkgo.focus '\\[Conformance\\]' -ginkgo.skip '\\[Flaky\\]|\\[Serial\\]'");
+    '';
+  };
+in {
+  singlenode = mkKubernetesSingleNodeTest base;
+  multinode = mkKubernetesMultiNodeTest base;
+}