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/darwin/apple-source-releases/PowerManagement/default.nix

@@ -0,0 +1,10 @@
+{ appleDerivation, xcbuildHook, IOKit }:
+
+appleDerivation {
+  nativeBuildInputs = [ xcbuildHook ];
+  buildInputs = [ IOKit ];
+  xcbuildFlags = [ "-target" "caffeinate" ];
+  installPhase = ''
+    install -D Products/Deployment/caffeinate $out/bin/caffeinate
+  '';
+}