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/os-specific/darwin/iproute2mac/default.nix

@@ -0,0 +1,38 @@
+{ lib, stdenv, fetchFromGitHub, darwin, python2 }:
+
+stdenv.mkDerivation rec {
+  version = "1.2.1";
+  pname = "iproute2mac";
+
+  src = fetchFromGitHub {
+    owner = "brona";
+    repo = "iproute2mac";
+    rev = "v${version}";
+    sha256 = "1n6la7blbxza2m79cpnywsavhzsdv4gzdxrkly4dppyidjg6jy1h";
+  };
+
+  buildInputs = [ python2 ];
+
+  postPatch = ''
+    substituteInPlace src/ip.py \
+      --replace /usr/bin/python ${python2}/bin/python \
+      --replace /sbin/ifconfig ${darwin.network_cmds}/bin/ifconfig \
+      --replace /sbin/route ${darwin.network_cmds}/bin/route \
+      --replace /usr/sbin/netstat ${darwin.network_cmds}/bin/netstat \
+      --replace /usr/sbin/ndp ${darwin.network_cmds}/bin/ndp \
+      --replace /usr/sbin/arp ${darwin.network_cmds}/bin/arp \
+      --replace /usr/sbin/networksetup ${darwin.network_cmds}/bin/networksetup
+  '';
+  installPhase = ''
+    mkdir -p $out/bin
+    install -D -m 755 src/ip.py $out/bin/ip
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/brona/iproute2mac";
+    description = "CLI wrapper for basic network utilites on Mac OS X inspired with iproute2 on Linux systems - ip command.";
+    license = licenses.mit;
+    maintainers = with maintainers; [ flokli ];
+    platforms = platforms.darwin;
+  };
+}