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/xtrace/default.nix

@@ -0,0 +1,30 @@
+{ lib, stdenv, autoreconfHook, fetchFromGitLab, libX11, xauth, makeWrapper }:
+
+stdenv.mkDerivation rec {
+  pname = "xtrace";
+  version = "1.4.0";
+
+  src = fetchFromGitLab {
+    domain = "salsa.debian.org";
+    owner = "debian";
+    repo = pname;
+    rev = "xtrace-${version}";
+    sha256 = "1yff6x847nksciail9jly41mv70sl8sadh0m5d847ypbjmxcwjpq";
+  };
+
+  nativeBuildInputs = [ autoreconfHook makeWrapper ];
+  buildInputs = [ libX11 ];
+
+  postInstall = ''
+    wrapProgram "$out/bin/xtrace" \
+        --prefix PATH ':' "${xauth}/bin"
+  '';
+
+  meta = with lib; {
+    homepage = "https://salsa.debian.org/debian/xtrace";
+    description = "Tool to trace X11 protocol connections";
+    license = licenses.gpl2;
+    maintainers = with maintainers; [ viric ];
+    platforms = with platforms; linux;
+  };
+}