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/os-specific/linux/xpadneo/default.nix

@@ -0,0 +1,39 @@
+{ lib, stdenv, fetchFromGitHub, kernel, bluez }:
+
+stdenv.mkDerivation rec {
+  pname = "xpadneo";
+  version = "0.9.1";
+
+  src = fetchFromGitHub {
+    owner = "atar-axis";
+    repo = pname;
+    rev = "v${version}";
+    hash = "sha256-VUcS4OzvPj0o627ZWIOBqEAQJ4JuMCMjgaZoMkL/IHc=";
+  };
+
+  setSourceRoot = ''
+    export sourceRoot=$(pwd)/source/hid-xpadneo/src
+  '';
+
+  nativeBuildInputs = kernel.moduleBuildDependencies;
+  buildInputs = [ bluez ];
+
+  makeFlags = kernel.makeFlags ++ [
+    "-C"
+    "${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"
+    "M=$(sourceRoot)"
+    "VERSION=${version}"
+  ];
+
+  buildFlags = [ "modules" ];
+  installFlags = [ "INSTALL_MOD_PATH=${placeholder "out"}" ];
+  installTargets = [ "modules_install" ];
+
+  meta = with lib; {
+    description = "Advanced Linux driver for Xbox One wireless controllers";
+    homepage = "https://atar-axis.github.io/xpadneo";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ kira-bruneau ];
+    platforms = platforms.linux;
+  };
+}