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/rq/default.nix

@@ -0,0 +1,29 @@
+{ stdenv, lib, fetchFromGitHub, rustPlatform }:
+
+rustPlatform.buildRustPackage rec {
+  pname = "rq";
+  version = "1.0.2";
+
+  src = fetchFromGitHub {
+    owner = "dflemstr";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "0km9d751jr6c5qy4af6ks7nv3xfn13iqi03wq59a1c73rnf0zinp";
+  };
+
+  cargoSha256 = "0071q08f75qrxdkbx1b9phqpbj15r79jbh391y32acifi7hr35hj";
+
+  postPatch = ''
+    # Remove #[deny(warnings)] which is equivalent to -Werror in C.
+    # Prevents build failures when upgrading rustc, which may give more warnings.
+    substituteInPlace src/lib.rs \
+      --replace "#![deny(warnings)]" ""
+  '';
+
+  meta = with lib; {
+    description = "A tool for doing record analysis and transformation";
+    homepage = "https://github.com/dflemstr/rq";
+    license = with licenses; [ asl20 ];
+    maintainers = with maintainers; [ aristid Br1ght0ne ];
+  };
+}