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/build-support/dotnet/nuget-to-nix/default.nix

@@ -0,0 +1,27 @@
+{ lib
+, runCommandLocal
+, runtimeShell
+, substituteAll
+, nix
+, coreutils
+, findutils
+, gnused
+}:
+
+runCommandLocal "nuget-to-nix" {
+  script = substituteAll {
+    src = ./nuget-to-nix.sh;
+    inherit runtimeShell;
+
+    binPath = lib.makeBinPath [
+      nix
+      coreutils
+      findutils
+      gnused
+    ];
+  };
+
+  meta.description = "Convert a nuget packages directory to a lockfile for buildDotnetModule";
+} ''
+  install -Dm755 $script $out/bin/nuget-to-nix
+''