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/misc/scfbuild/default.nix

@@ -0,0 +1,34 @@
+{ lib, buildPythonApplication, fetchFromGitHub, python, pyyaml, fonttools, fontforge }:
+
+buildPythonApplication {
+  pname = "scfbuild";
+  version = "2.0.0";
+
+  format = "other";
+
+  src = fetchFromGitHub {
+    owner = "13rac1";
+    repo = "scfbuild";
+    rev = "6d84339512a892972185d894704efa67dd82e87a";
+    sha256 = "0wkyzkhshlax9rvdmn441gv87n9abfr0qqmgs8bkg9kbcjb4bhad";
+  };
+
+  propagatedBuildInputs = [ pyyaml fonttools fontforge ];
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/${python.sitePackages}
+    cp -r scfbuild $out/${python.sitePackages}
+    cp -r bin $out
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "SVGinOT color font builder";
+    homepage = "https://github.com/13rac1/scfbuild";
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ abbradar ];
+  };
+}