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/rust/cargo-limit/default.nix

@@ -0,0 +1,36 @@
+{ lib
+, rustPlatform
+, fetchFromGitHub
+, nix-update-script
+, stdenv
+, libiconv
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "cargo-limit";
+  version = "0.0.9";
+
+  src = fetchFromGitHub {
+    owner = "alopatindev";
+    repo = "cargo-limit";
+    rev = version;
+    sha256 = "sha256-GRitz9LOdZhbakbLZI2BUfZjqXLrsMK2MQJgixiEHaA=";
+  };
+
+  cargoSha256 = "sha256-uiANH9HOvy41FiABTTx2D9Rz1z/F7eITc5aiofaMSfI=";
+
+  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+
+  passthru = {
+    updateScript = nix-update-script {
+      attrPath = pname;
+    };
+  };
+
+  meta = with lib; {
+    description = "Cargo subcommand \"limit\": reduces the noise of compiler messages";
+    homepage = "https://github.com/alopatindev/cargo-limit";
+    license = with licenses; [ asl20 /* or */ mit ];
+    maintainers = with maintainers; [ otavio ];
+  };
+}