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/ipcalc/default.nix

@@ -0,0 +1,38 @@
+{ lib
+, stdenv
+, fetchFromGitLab
+, glib
+, meson
+, ninja
+, libmaxminddb
+, pkg-config
+, ronn
+}:
+
+stdenv.mkDerivation rec {
+  pname = "ipcalc";
+  version = "1.0.1";
+
+  src = fetchFromGitLab {
+    owner = "ipcalc";
+    repo = "ipcalc";
+    rev = version;
+    sha256 = "0qg516jv94dlk0qj0bj5y1dd0i31ziqcjd6m00w8xp5wl97bj2ji";
+  };
+
+  nativeBuildInputs = [
+    glib
+    meson
+    ninja
+    pkg-config
+    libmaxminddb
+    ronn
+  ];
+
+  meta = with lib; {
+    description = "Simple IP network calculator";
+    homepage = "https://gitlab.com/ipcalc/ipcalc";
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ ];
+  };
+}