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/text/igrep/default.nix

@@ -0,0 +1,37 @@
+{ lib
+, rustPlatform
+, fetchFromGitHub
+, stdenv
+, Security
+, testers
+, igrep
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "igrep";
+  version = "0.5.0";
+
+  src = fetchFromGitHub {
+    owner = "konradsz";
+    repo = "igrep";
+    rev = "v${version}";
+    sha256 = "sha256-mJtxqwbqofiDuiGokn24qdnck27w7w/3A5mdqZIU88U=";
+  };
+
+  cargoSha256 = "sha256-ikU4SRLu7PQGbidPmf2W39e3sE8QY8YMU6Q0eWhgvLM=";
+
+  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+
+  passthru.tests = {
+    version = testers.testVersion { package = igrep; command = "ig --version"; };
+  };
+
+  meta = with lib; {
+    description = "Interactive Grep";
+    homepage = "https://github.com/konradsz/igrep";
+    changelog = "https://github.com/konradsz/igrep/blob/v${version}/CHANGELOG.md";
+    license = licenses.mit;
+    maintainers = with maintainers; [ _0x4A6F ];
+    mainProgram = "ig";
+  };
+}