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/applications/networking/owamp/default.nix

@@ -0,0 +1,29 @@
+{lib, stdenv, fetchFromGitHub
+, autoconf, automake, mandoc }:
+
+stdenv.mkDerivation rec {
+  pname = "owamp";
+  version = "3.5.6";
+  nativeBuildInputs = [ autoconf automake ];
+  buildInputs = [ mandoc ];
+  src = fetchFromGitHub {
+    owner = "perfsonar";
+    repo = "owamp";
+    rev = version;
+    sha256="019rcshmrqk8pfp510j5jvazdcnz0igfkwv44mfxb5wirzj9p6s7";
+    fetchSubmodules = true;
+  };
+
+  preConfigure = ''
+    I2util/bootstrap.sh
+    ./bootstrap
+  '';
+
+  meta = with lib; {
+    homepage = "http://software.internet2.edu/owamp/";
+    description = "A tool for performing one-way active measurements";
+    platforms = platforms.linux;
+    maintainers = [maintainers.teto];
+    license = licenses.asl20;
+  };
+}