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/trees.nix

@@ -0,0 +1,25 @@
+{ build-idris-package
+, fetchFromGitHub
+, contrib
+, bi
+, lib
+}:
+build-idris-package  {
+  pname = "trees";
+  version = "2018-03-19";
+
+  idrisDeps = [ contrib bi ];
+
+  src = fetchFromGitHub {
+    owner = "clayrat";
+    repo = "idris-trees";
+    rev = "dc17f9598bd78ec2b283d91b3c58617960d88c85";
+    sha256 = "1c3p69875qc4zdk28im9xz45zw46ajgcmxpqmig63y0z4v3gwxww";
+  };
+
+  meta = {
+    description = "Trees in Idris";
+    homepage = "https://github.com/clayrat/idris-trees";
+    maintainers = [ lib.maintainers.brainrape ];
+  };
+}