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/ubridge/default.nix

@@ -0,0 +1,41 @@
+{ lib, stdenv, fetchFromGitHub
+, libpcap
+}:
+
+stdenv.mkDerivation rec {
+  pname = "ubridge";
+  version = "0.9.18";
+
+  src = fetchFromGitHub {
+    owner = "GNS3";
+    repo = "ubridge";
+    rev = "v${version}";
+    sha256 = "0jg66jhhpv4c9340fsdp64hf9h253i8r81fknxa0gq241ripp3jn";
+  };
+
+  postPatch = ''
+    substituteInPlace Makefile \
+      --replace "/usr/local/bin" "$out/bin" \
+      --replace "setcap" "#setcap"
+  '';
+
+  buildInputs = [ libpcap ];
+
+  preInstall = ''
+    mkdir -p $out/bin
+  '';
+
+  meta = with lib; {
+    description = "Bridge for UDP tunnels, Ethernet, TAP, and VMnet interfaces";
+    longDescription = ''
+      uBridge is a simple application to create user-land bridges between
+      various technologies. Currently bridging between UDP tunnels, Ethernet
+      and TAP interfaces is supported. Packet capture is also supported.
+    '';
+    inherit (src.meta) homepage;
+    changelog = "https://github.com/GNS3/ubridge/releases/tag/v${version}";
+    license = licenses.gpl3Plus;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ primeos ];
+  };
+}