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/development/tools/misc/sipp/default.nix

@@ -0,0 +1,34 @@
+{ lib, stdenv, fetchurl, ncurses, libpcap, cmake, openssl, git, lksctp-tools }:
+
+stdenv.mkDerivation rec {
+  version = "3.6.1";
+  pname = "sipp";
+
+  src = fetchurl {
+    url = "https://github.com/SIPp/${pname}/releases/download/v${version}/${pname}-${version}.tar.gz";
+    sha256 = "sha256-alYOg6/5gvMx3byt+zvVMMWJbNW3V91utoITPMhg7LE=";
+  };
+
+  postPatch = ''
+    cp version.h src/version.h
+  '';
+
+  cmakeFlags = [
+    "-DUSE_GSL=1"
+    "-DUSE_PCAP=1"
+    "-DUSE_SSL=1"
+    "-DUSE_SCTP=${if stdenv.isLinux then "1" else "0"}"
+  ];
+  enableParallelBuilding = true;
+
+  nativeBuildInputs = [ cmake git ];
+  buildInputs = [ ncurses libpcap openssl ]
+    ++ lib.optional (stdenv.isLinux) lksctp-tools;
+
+  meta = with lib; {
+    homepage = "http://sipp.sf.net";
+    description = "The SIPp testing tool";
+    license = licenses.gpl3;
+    platforms = platforms.unix;
+  };
+}