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/development/idris-modules/xhr.nix

@@ -0,0 +1,25 @@
+{ build-idris-package
+, fetchFromGitHub
+, idrisscript
+, lib
+}:
+build-idris-package  {
+  pname = "xhr";
+  version = "2017-04-22";
+
+  idrisDeps = [ idrisscript ];
+
+  src = fetchFromGitHub {
+    owner = "pierrebeaucamp";
+    repo = "idris-xhr";
+    rev = "fb32a748ccdb9070de3f2d6048564e34c064b362";
+    sha256 = "0l07mnarvrb4xdw0b2xqgyxq4rljw1axz5mc9w4gmhvcrzxnyfnr";
+  };
+
+  meta = {
+    description = "Idris library to interact with xhr";
+    homepage = "https://github.com/pierrebeaucamp/idris-xhr";
+    license = lib.licenses.asl20;
+    maintainers = [ lib.maintainers.brainrape ];
+  };
+}