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/libraries/gnu-config/default.nix

@@ -0,0 +1,40 @@
+{ lib, stdenv, fetchurl }:
+
+let
+  rev = "6faca61810d335c7837f320733fe8e15a1431fc2";
+
+  # Don't use fetchgit as this is needed during Aarch64 bootstrapping
+  configGuess = fetchurl {
+    url = "https://git.savannah.gnu.org/cgit/config.git/plain/config.guess?id=${rev}";
+    sha256 = "06wkkhpbx9slmknr2g7mcd8x3zsdhnmmay25l31h3rkdp1wkq7kx";
+  };
+  configSub = fetchurl {
+    url = "https://git.savannah.gnu.org/cgit/config.git/plain/config.sub?id=${rev}";
+    sha256 = "1qkph8cqanmgy3s4a18bm1a4vk62i8pf8cy5pc1hkpqwn4g6l0di";
+  };
+in stdenv.mkDerivation {
+  pname = "gnu-config";
+  version = "2021-01-25";
+
+  buildCommand = ''
+    mkdir -p $out
+    cp ${configGuess} $out/config.guess
+    cp ${configSub} $out/config.sub
+
+    chmod +x $out/config.*
+  '';
+
+  meta = with lib; {
+    description = "Attempt to guess a canonical system name";
+    homepage = "https://savannah.gnu.org/projects/config";
+    license = licenses.gpl3;
+    # In addition to GPLv3:
+    #   As a special exception to the GNU General Public License, if you
+    #   distribute this file as part of a program that contains a
+    #   configuration script generated by Autoconf, you may include it under
+    #   the same distribution terms that you use for the rest of that
+    #   program.
+    maintainers = [ maintainers.dezgeg ];
+    platforms = platforms.all;
+  };
+}