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/sx/default.nix

@@ -0,0 +1,30 @@
+{ coreutils, fetchFromGitHub, lib, makeWrapper, stdenv, util-linux, xauth, xorgserver }:
+
+stdenv.mkDerivation rec {
+  pname = "sx";
+  version = "2.1.7";
+
+  src = fetchFromGitHub {
+    owner = "earnestly";
+    repo = pname;
+    rev = version;
+    sha256 = "0xv15m30nhcknasqiybj5wwf7l91q4a4jf6xind8x5x00c6br6nl";
+  };
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  makeFlags = [ "PREFIX=$(out)" ];
+
+  postInstall = ''
+    wrapProgram $out/bin/sx \
+      --prefix PATH : ${lib.makeBinPath [ coreutils util-linux xorgserver xauth ]}
+  '';
+
+  meta = with lib; {
+    description = "Simple alternative to both xinit and startx for starting a Xorg server";
+    homepage = "https://github.com/earnestly/sx";
+    license = licenses.mit;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ figsoda ];
+  };
+}