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/blink1-tool/default.nix

@@ -0,0 +1,45 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, pkg-config
+, libusb1
+}:
+
+stdenv.mkDerivation rec {
+  pname = "blink1";
+  version = "2.2.0";
+
+  src = fetchFromGitHub {
+    owner = "todbot";
+    repo = "blink1-tool";
+    rev = "v${version}";
+    fetchSubmodules = true;
+    hash = "sha256-xuCjPSQUQ/KOcdsie/ndecUiEt+t46m4eI33PXJoAAY=";
+  };
+
+  postPatch = ''
+    substituteInPlace Makefile \
+      --replace "@git submodule update --init" "true"
+  '';
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ libusb1 ];
+
+  makeFlags = [
+    "GIT_TAG=v${version}"
+    "USBLIB_TYPE=HIDAPI"
+    "HIDAPI_TYPE=LIBUSB"
+  ];
+
+  hardeningDisable = [ "format" ];
+
+  installFlags = [ "PREFIX=${placeholder "out"}" ];
+
+  meta = with lib; {
+    description = "Command line client for the blink(1) notification light";
+    homepage = "https://blink1.thingm.com/";
+    license = with licenses; [ cc-by-sa-40 ];
+    maintainers = with maintainers; [ cransom ];
+    platforms = platforms.linux;
+  };
+}