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/nixpkgs-lint.nix

@@ -0,0 +1,24 @@
+{ stdenv, lib, makeWrapper, perl, perlPackages }:
+
+stdenv.mkDerivation {
+  name = "nixpkgs-lint-1";
+
+  nativeBuildInputs = [ makeWrapper ];
+  buildInputs = [ perl perlPackages.XMLSimple ];
+
+  dontUnpack = true;
+  buildPhase = "true";
+
+  installPhase =
+    ''
+      mkdir -p $out/bin
+      cp ${./nixpkgs-lint.pl} $out/bin/nixpkgs-lint
+      wrapProgram $out/bin/nixpkgs-lint --set PERL5LIB $PERL5LIB
+    '';
+
+  meta = with lib; {
+    maintainers = [ maintainers.eelco ];
+    description = "A utility for Nixpkgs contributors to check Nixpkgs for common errors";
+    platforms = platforms.unix;
+  };
+}