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/compilers/yosys/plugins/bluespec.nix

@@ -0,0 +1,33 @@
+{ stdenv, lib, fetchFromGitHub, pkg-config
+, yosys, readline, zlib, bluespec
+}:
+
+stdenv.mkDerivation {
+  pname = "yosys-bluespec";
+  version = "2021.09.08";
+  plugin = "bluespec";
+
+  src = fetchFromGitHub {
+    owner  = "thoughtpolice";
+    repo   = "yosys-bluespec";
+    rev    = "f6f4127a4e96e18080fd5362b6769fa3e24c76b1";
+    sha256 = "sha256-3cNFP/k4JsgLyUQHWU10Htl2Rh0staAcA3R4piD6hDE=";
+  };
+
+  buildInputs = [ yosys readline zlib bluespec ];
+  nativeBuildInputs = [ pkg-config ];
+
+  doCheck = true;
+  makeFlags = [
+    "PREFIX=$(out)/share/yosys/plugins"
+    "STATIC_BSC_PATH=${bluespec}/bin/bsc"
+    "STATIC_BSC_LIBDIR=${bluespec}/lib"
+  ];
+
+  meta = with lib; {
+    description = "Bluespec plugin for Yosys";
+    license     = licenses.isc;
+    platforms   = platforms.all;
+    maintainers = with maintainers; [ thoughtpolice ];
+  };
+}