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/specdris.nix

@@ -0,0 +1,27 @@
+{ build-idris-package
+, fetchFromGitHub
+, effects
+, lib
+}:
+build-idris-package {
+  pname = "specdris";
+  version = "2018-01-23";
+
+  src = fetchFromGitHub {
+    owner = "pheymann";
+    repo = "specdris";
+    rev = "625f88f5e118e53f30bcf5e5f3dcf48eb268ac21";
+    sha256 = "1gc717xf4i7z75aqazy5wqm7b1dqfyx5pprdypxz1h3980m67fsa";
+  };
+
+  idrisDeps = [ effects ];
+
+  # tests use a different ipkg and directory structure
+  doCheck = false;
+
+  meta = {
+    description = "A testing library for Idris";
+    homepage = "https://github.com/pheymann/specdris";
+    license = lib.licenses.mit;
+  };
+}