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/tools/clang-tools/default.nix

@@ -0,0 +1,39 @@
+{ lib, stdenv, llvmPackages }:
+
+let
+  unwrapped = llvmPackages.clang-unwrapped;
+
+in stdenv.mkDerivation {
+  pname = "clang-tools";
+  version = lib.getVersion unwrapped;
+
+  dontUnpack = true;
+
+  clang = llvmPackages.clang;
+  inherit unwrapped;
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/bin
+
+    substituteAll ${./wrapper} $out/bin/clangd
+    chmod +x $out/bin/clangd
+    for tool in \
+      clang-apply-replacements \
+      clang-check \
+      clang-format \
+      clang-rename \
+      clang-tidy
+    do
+      ln -s $out/bin/clangd $out/bin/$tool
+    done
+
+    runHook postInstall
+  '';
+
+  meta = unwrapped.meta // {
+    description = "Standalone command line tools for C++ development";
+    maintainers = with lib.maintainers; [ patryk27 ];
+  };
+}