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/misc/fontfor/default.nix

@@ -0,0 +1,41 @@
+{ lib
+, rustPlatform
+, fetchFromGitHub
+, cmake
+, pkg-config
+, expat
+, fontconfig
+, freetype
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "fontfor";
+  version = "0.3.1";
+
+  src = fetchFromGitHub {
+    owner = "7sDream";
+    repo = "fontfor";
+    rev = "v${version}";
+    sha256 = "1b07hd41blwsnb91vh2ax9zigm4lh8n0i5man0cjmxhavvbfy12b";
+  };
+
+  nativeBuildInputs = [
+    cmake
+    pkg-config
+  ];
+  buildInputs = [
+    expat
+    fontconfig
+    freetype
+  ];
+
+  cargoSha256 = "1drfrq32lvmi1xlshynzh66gb1cah43pqcyxv3qxp487br9w1iyj";
+
+  meta = with lib; {
+    description = "Find fonts which can show a specified character and preview them in browser";
+    homepage = "https://github.com/7sDream/fontfor";
+    license = with licenses; [ gpl3Plus ];
+    maintainers = with maintainers; [ shamilton ];
+    platforms = platforms.linux;
+  };
+}