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/applications/editors/emacs/elisp-packages/nongnu-packages.nix

@@ -0,0 +1,37 @@
+/*
+
+# Updating
+
+To update the list of packages from nongnu (ELPA),
+
+1. Run `./update-nongnu`.
+2. Check for evaluation errors:
+     # "../../../../../" points to the default.nix from root of Nixpkgs tree
+     env NIXPKGS_ALLOW_BROKEN=1 nix-instantiate ../../../../../ -A emacs.pkgs.nongnuPackages
+3. Run `git commit -m "nongnu-packages $(date -Idate)" -- nongnu-generated.nix`
+
+*/
+
+{ lib, buildPackages }:
+
+self: let
+
+  generateNongnu = lib.makeOverridable ({
+    generated ? ./nongnu-generated.nix
+  }: let
+
+    imported = import generated {
+      callPackage = pkgs: args: self.callPackage pkgs (args // {
+        # Use custom elpa url fetcher with fallback/uncompress
+        fetchurl = buildPackages.callPackage ./fetchelpa.nix { };
+      });
+    };
+
+    super = imported;
+
+    overrides = {
+    };
+
+  in super // overrides);
+
+in generateNongnu { }