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/text/html2text/default.nix

@@ -0,0 +1,33 @@
+{ lib, stdenv, fetchurl }:
+
+stdenv.mkDerivation rec {
+  pname = "html2text";
+  version = "1.3.2a";
+
+  src = fetchurl {
+    url = "http://www.mbayer.de/html2text/downloads/html2text-${version}.tar.gz";
+    sha256 = "000b39d5d910b867ff7e087177b470a1e26e2819920dcffd5991c33f6d480392";
+  };
+
+  preConfigure = ''
+    substituteInPlace configure \
+        --replace /bin/echo echo \
+        --replace CXX=unknown ':'
+  '';
+
+  # the --prefix has no effect
+  installPhase = ''
+    mkdir -p $out/bin $out/man/man{1,5}
+    cp html2text $out/bin
+    cp html2text.1.gz $out/man/man1
+    cp html2textrc.5.gz $out/man/man5
+  '';
+
+  meta = {
+    description = "Convert HTML to plain text";
+    homepage = "http://www.mbayer.de/html2text/";
+    license = lib.licenses.gpl2Plus;
+    platforms = lib.platforms.unix;
+    maintainers = [ lib.maintainers.eikek ];
+  };
+}