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/rauc/default.nix

@@ -0,0 +1,51 @@
+{ autoreconfHook
+, curl
+, dbus
+, fetchFromGitHub
+, glib
+, json-glib
+, lib
+, nix-update-script
+, openssl
+, pkg-config
+, stdenv
+}:
+
+stdenv.mkDerivation rec {
+  pname = "rauc";
+  version = "1.6";
+
+  src = fetchFromGitHub {
+    owner = pname;
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-HBeH9vzzfY7pG88xyoL+NJ78LMGphCAfyZiOxFSJnnc=";
+  };
+
+  passthru = {
+    updateScript = nix-update-script {
+      attrPath = pname;
+    };
+  };
+
+  enableParallelBuilding = true;
+
+  nativeBuildInputs = [ pkg-config autoreconfHook ];
+
+  buildInputs = [ curl dbus glib json-glib openssl ];
+
+  configureFlags = [
+    "--with-systemdunitdir=${placeholder "out"}/lib/systemd/system"
+    "--with-dbusinterfacesdir=${placeholder "out"}/share/dbus-1/interfaces"
+    "--with-dbuspolicydir=${placeholder "out"}/share/dbus-1/system.d"
+    "--with-dbussystemservicedir=${placeholder "out"}/share/dbus-1/system-services"
+  ];
+
+  meta = with lib; {
+    description = "Safe and secure software updates for embedded Linux";
+    homepage = "https://rauc.io";
+    license = licenses.lgpl21Only;
+    maintainers = with maintainers; [ emantor ];
+    platforms = with platforms; linux;
+  };
+}