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/nuttcp/default.nix

@@ -0,0 +1,51 @@
+{ lib, stdenv, fetchurl }:
+
+stdenv.mkDerivation rec {
+  pname = "nuttcp";
+  version = "8.1.4";
+
+  src = fetchurl {
+    urls = [
+      "http://nuttcp.net/nuttcp/latest/${pname}-${version}.c"
+      "http://nuttcp.net/nuttcp/${pname}-${version}/${pname}-${version}.c"
+      "http://nuttcp.net/nuttcp/beta/${pname}-${version}.c"
+    ];
+    sha256 = "1mygfhwxfi6xg0iycivx98ckak2abc3vwndq74278kpd8g0yyqyh";
+  };
+
+  man = fetchurl {
+    url = "http://nuttcp.net/nuttcp/${pname}-${version}/nuttcp.8";
+    sha256 = "1yang94mcdqg362qbi85b63746hk6gczxrk619hyj91v5763n4vx";
+  };
+
+  dontUnpack = true;
+
+  buildPhase = ''
+    cc -O2 -o nuttcp $src
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp nuttcp $out/bin
+  '';
+
+  meta = with lib; {
+    description = "Network performance measurement tool";
+    longDescription = ''
+      nuttcp is a network performance measurement tool intended for use by
+      network and system managers. Its most basic usage is to determine the raw
+      TCP (or UDP) network layer throughput by transferring memory buffers from
+      a source system across an interconnecting network to a destination
+      system, either transferring data for a specified time interval, or
+      alternatively transferring a specified number of bytes. In addition to
+      reporting the achieved network throughput in Mbps, nuttcp also provides
+      additional useful information related to the data transfer such as user,
+      system, and wall-clock time, transmitter and receiver CPU utilization,
+      and loss percentage (for UDP transfers).
+    '';
+    license = licenses.gpl2;
+    homepage = "http://nuttcp.net/";
+    maintainers = with maintainers; [ ];
+    platforms = platforms.unix;
+  };
+}