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/tools/security/gnupg/1compat.nix

@@ -0,0 +1,31 @@
+{ stdenv, gnupg, coreutils, writeScript }:
+
+stdenv.mkDerivation {
+  pname = "gnupg1compat";
+  version = gnupg.version;
+
+  builder = writeScript "gnupg1compat-builder" ''
+    PATH=${coreutils}/bin
+    # First symlink all top-level dirs
+    mkdir -p $out
+    ln -s "${gnupg}/"* $out
+
+    # Replace bin with directory and symlink it contents
+    rm $out/bin
+    mkdir -p $out/bin
+    ln -s "${gnupg}/bin/"* $out/bin
+
+    # Add symlinks for any executables that end in 2 and lack any non-*2 version
+    for f in $out/bin/*2; do
+      [[ -x $f ]] || continue # ignore failed globs and non-executable files
+      [[ -e ''${f%2} ]] && continue # ignore commands that already have non-*2 versions
+      ln -s -- "''${f##*/}" "''${f%2}"
+    done
+  '';
+
+  meta = gnupg.meta // {
+    description = gnupg.meta.description +
+      " with symbolic links for gpg and gpgv";
+    priority = -1;
+  };
+}