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/X11/runningx/default.nix

@@ -0,0 +1,35 @@
+{ lib, stdenv, fetchurl, pkg-config, libX11 }:
+
+stdenv.mkDerivation {
+  pname = "runningx";
+  version = "1.0";
+
+  src = fetchurl {
+    url = "http://www.fiction.net/blong/programs/mutt/autoview/RunningX.c";
+    sha256 = "1mikkhrx6jsx716041qdy3nwjac08pxxvxyq2yablm8zg9hrip0d";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+
+  buildInputs = [ libX11 ];
+
+  dontUnpack = true;
+
+  buildPhase = ''
+    cc -O2 -o RunningX $(pkg-config --cflags --libs x11) $src
+  '';
+
+  installPhase = ''
+    mkdir -p "$out"/bin
+    cp -vai RunningX "$out/bin"
+  '';
+
+  meta = {
+    homepage = "http://www.fiction.net/blong/programs/mutt/";
+    description = "A program for testing if X is running";
+    license = lib.licenses.free;
+    platforms = lib.platforms.unix;
+    maintainers = [ lib.maintainers.romildo ];
+    mainProgram = "RunningX";
+  };
+}