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/libraries/libfyaml/default.nix

@@ -0,0 +1,29 @@
+{ lib, stdenv, fetchFromGitHub, pkg-config, autoreconfHook }:
+
+stdenv.mkDerivation rec {
+  pname = "libfyaml";
+  version = "0.7.12";
+
+  src = fetchFromGitHub {
+    owner = "pantoniou";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-gmVjiwf8PsDYRt8jmXNrd+hJSL099hbLjq8Z0c1u2HE=";
+  };
+
+  nativeBuildInputs = [ autoreconfHook pkg-config ];
+
+  doCheck = true;
+
+  preCheck = ''
+    patchShebangs test
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/pantoniou/libfyaml";
+    description = "Fully feature complete YAML parser and emitter, supporting the latest YAML spec and passing the full YAML testsuite";
+    license = licenses.mit;
+    maintainers = [ maintainers.marsam ];
+    platforms = platforms.all;
+  };
+}