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/fac/default.nix

@@ -0,0 +1,35 @@
+{ lib, buildGoPackage, fetchFromGitHub, makeWrapper, git }:
+
+buildGoPackage rec {
+  pname = "fac";
+  version = "2.0.0";
+
+  goPackagePath = "github.com/mkchoi212/fac";
+
+  src = fetchFromGitHub {
+    owner = "mkchoi212";
+    repo = "fac";
+    rev = "v${version}";
+    sha256 = "054bbiw0slz9szy3ap2sh5dy97w3g7ms27rd3ww3i1zdhvnggwpc";
+  };
+
+  goDeps = ./deps.nix;
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  postInstall = ''
+    wrapProgram $out/bin/fac \
+      --prefix PATH : ${git}/bin
+
+    # Install man page, not installed by default
+    install -D go/src/${goPackagePath}/assets/doc/fac.1 $out/share/man/man1/fac.1
+  '';
+
+  meta = with lib; {
+    description = "CUI for fixing git conflicts";
+    inherit (src.meta) homepage;
+    license = licenses.mit;
+    maintainers = with maintainers; [ dtzWill ];
+  };
+}
+