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/tools/security/safe/default.nix

@@ -0,0 +1,31 @@
+{ lib
+, buildGoModule
+, fetchFromGitHub
+}:
+
+buildGoModule rec {
+  pname = "safe";
+  version = "1.6.1";
+
+  src = fetchFromGitHub {
+    owner = "starkandwayne";
+    repo = "safe";
+    rev = "v${version}";
+    sha256 = "sha256-ankX4BeMvBEd0e01mQHfaPg4z1z+IZqELaSEJ5deF8Y=";
+  };
+
+  vendorSha256 = "sha256-7hX35FfFxfoiI/dSxWhZH8iJoRWa4slAJF0lULq8KL4=";
+
+  subPackages = [ "." ];
+
+  ldflags = [
+    "-X main.Version=${version}"
+  ];
+
+  meta = with lib; {
+    description = "A Vault CLI";
+    homepage = "https://github.com/starkandwayne/safe";
+    license = licenses.mit;
+    maintainers = with maintainers; [ eonpatapon ];
+  };
+}