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/system/cm-rgb/default.nix

@@ -0,0 +1,59 @@
+{ lib
+, buildPythonApplication
+, fetchFromGitHub
+, atk
+, gobject-introspection
+, wrapGAppsHook
+, click
+, hidapi
+, psutil
+, pygobject3
+}:
+
+buildPythonApplication rec {
+  pname = "cm-rgb";
+  version = "0.3.6";
+
+  src = fetchFromGitHub {
+    owner = "gfduszynski";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-m0ZAjSLRzcjzygLEbvCiDd7krc1gRqTg1ZV4H/o2c68=";
+  };
+
+  nativeBuildInputs = [
+    atk
+
+    # Populate GI_TYPELIB_PATH
+    gobject-introspection
+    wrapGAppsHook
+  ];
+
+  propagatedBuildInputs = [
+    click
+    hidapi
+    psutil
+    pygobject3
+  ];
+
+  postInstall = ''
+    mkdir -p $out/etc/udev/rules.d
+    echo 'SUBSYSTEM=="usb", ATTR{idVendor}=="2516", ATTR{idProduct}=="0051", TAG+="uaccess"' \
+      > $out/etc/udev/rules.d/60-cm-rgb.rules
+  '';
+
+  meta = with lib; {
+    description = "Control AMD Wraith Prism RGB LEDs";
+    longDescription = ''
+      cm-rgb controls AMD Wraith Prism RGB LEDS.
+
+      To permit non-root accounts to use this utility on
+      NixOS, add this package to <literal>services.udev.packages</literal>
+      in <filename>configuration.nix</filename>.
+    '';
+    homepage = "https://github.com/gfduszynski/cm-rgb";
+    license = licenses.mit;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ ];
+  };
+}