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>

pkgs/tools/networking/slirp4netns/default.nix

@@ -0,0 +1,39 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, autoreconfHook
+, pkg-config
+, glib
+, libcap
+, libseccomp
+, libslirp
+, nixosTests
+}:
+
+stdenv.mkDerivation rec {
+  pname = "slirp4netns";
+  version = "1.2.0";
+
+  src = fetchFromGitHub {
+    owner = "rootless-containers";
+    repo = "slirp4netns";
+    rev = "v${version}";
+    sha256 = "sha256-wVisE4YAK52yfeM2itnBqCmhRKlrKRs0NEppQzZPok8=";
+  };
+
+  nativeBuildInputs = [ autoreconfHook pkg-config ];
+
+  buildInputs = [ glib libcap libseccomp libslirp ];
+
+  enableParallelBuilding = true;
+
+  passthru.tests = { inherit (nixosTests) podman; };
+
+  meta = with lib; {
+    homepage = "https://github.com/rootless-containers/slirp4netns";
+    description = "User-mode networking for unprivileged network namespaces";
+    license = licenses.gpl2;
+    maintainers = with maintainers; [ orivej ] ++ teams.podman.members;
+    platforms = platforms.linux;
+  };
+}