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/compression/ncompress/default.nix

@@ -0,0 +1,27 @@
+{ lib, stdenv, fetchFromGitHub }:
+
+stdenv.mkDerivation rec {
+  pname = "ncompress";
+  version = "5.0";
+
+  src = fetchFromGitHub {
+    owner = "vapier";
+    repo = "ncompress";
+    rev = "v${version}";
+    sha256 = "sha256-Yhs3C5/kR7Ve56E84usYJprxIMAIwXVahLi1N9TIfj0=";
+  };
+
+  makeFlags = [ "PREFIX=$(out)" ];
+  installTargets = "install_core";
+
+  postInstall = ''
+    mv $out/bin/uncompress $out/bin/uncompress-ncompress
+  '';
+
+  meta = with lib; {
+    homepage = "http://ncompress.sourceforge.net/";
+    license = licenses.publicDomain;
+    description = "A fast, simple LZW file compressor";
+    platforms = platforms.unix;
+  };
+}