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/containers-ip.nix

@@ -0,0 +1,74 @@
+let
+  webserverFor = hostAddress: localAddress: {
+    inherit hostAddress localAddress;
+    privateNetwork = true;
+    config = {
+      services.httpd = {
+        enable = true;
+        adminAddr = "foo@example.org";
+      };
+      networking.firewall.allowedTCPPorts = [ 80 ];
+    };
+  };
+
+in import ./make-test-python.nix ({ pkgs, lib, ... }: {
+  name = "containers-ipv4-ipv6";
+  meta = {
+    maintainers = with lib.maintainers; [ aristid aszlig eelco kampfschlaefer ];
+  };
+
+  nodes.machine =
+    { pkgs, ... }: {
+      imports = [ ../modules/installer/cd-dvd/channel.nix ];
+      virtualisation = {
+        writableStore = true;
+      };
+
+      containers.webserver4 = webserverFor "10.231.136.1" "10.231.136.2";
+      containers.webserver6 = webserverFor "fc00::2" "fc00::1";
+      virtualisation.additionalPaths = [ pkgs.stdenv ];
+    };
+
+  testScript = { nodes, ... }: ''
+    import time
+
+
+    def curl_host(ip):
+        # put [] around ipv6 addresses for curl
+        host = ip if ":" not in ip else f"[{ip}]"
+        return f"curl --fail --connect-timeout 2 http://{host}/ > /dev/null"
+
+
+    def get_ip(container):
+        # need to distinguish because show-ip won't work for ipv6
+        if container == "webserver4":
+            ip = machine.succeed(f"nixos-container show-ip {container}").rstrip()
+            assert ip == "${nodes.machine.config.containers.webserver4.localAddress}"
+            return ip
+        return "${nodes.machine.config.containers.webserver6.localAddress}"
+
+
+    for container in "webserver4", "webserver6":
+        assert container in machine.succeed("nixos-container list")
+
+        with subtest(f"Start container {container}"):
+            machine.succeed(f"nixos-container start {container}")
+            # wait 2s for container to start and network to be up
+            time.sleep(2)
+
+        # Since "start" returns after the container has reached
+        # multi-user.target, we should now be able to access it.
+
+        ip = get_ip(container)
+        with subtest(f"{container} reacts to pings and HTTP requests"):
+            machine.succeed(f"ping -n -c1 {ip}")
+            machine.succeed(curl_host(ip))
+
+        with subtest(f"Stop container {container}"):
+            machine.succeed(f"nixos-container stop {container}")
+            machine.fail(curl_host(ip))
+
+        # Destroying a declarative container should fail.
+        machine.fail(f"nixos-container destroy {container}")
+  '';
+})