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/uhubctl/default.nix

@@ -0,0 +1,29 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, libusb1
+}:
+
+stdenv.mkDerivation rec {
+  pname = "uhubctl";
+  version = "2.4.0";
+
+  src = fetchFromGitHub {
+    owner = "mvp";
+    repo = "uhubctl";
+    rev = "v${version}";
+    sha256 = "sha256-F3fOoZYnfIWMrESyVJ/9z6Vou1279avhs600rQayUVA=";
+  };
+
+  buildInputs = [ libusb1 ];
+
+  installFlags = [ "prefix=${placeholder "out"}" ];
+
+  meta = with lib; {
+    homepage = "https://github.com/mvp/uhubctl";
+    description = "Utility to control USB power per-port on smart USB hubs";
+    license = licenses.gpl2;
+    maintainers = with maintainers; [ prusnak ];
+    platforms = with platforms; linux ++ darwin;
+  };
+}