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>

maintainers/scripts/nix-generate-from-cpan.nix

@@ -0,0 +1,25 @@
+{ stdenv, lib, makeWrapper, perl, perlPackages }:
+
+stdenv.mkDerivation {
+  name = "nix-generate-from-cpan-3";
+
+  buildInputs = with perlPackages; [
+    makeWrapper perl GetoptLongDescriptive CPANPLUS Readonly LogLog4perl
+  ];
+
+  phases = [ "installPhase" ];
+
+  installPhase =
+    ''
+      mkdir -p $out/bin
+      cp ${./nix-generate-from-cpan.pl} $out/bin/nix-generate-from-cpan
+      patchShebangs $out/bin/nix-generate-from-cpan
+      wrapProgram $out/bin/nix-generate-from-cpan --set PERL5LIB $PERL5LIB
+    '';
+
+  meta = {
+    maintainers = with lib.maintainers; [ eelco ];
+    description = "Utility to generate a Nix expression for a Perl package from CPAN";
+    platforms = lib.platforms.unix;
+  };
+}