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/libyang/default.nix

@@ -0,0 +1,59 @@
+{ stdenv
+, lib
+, fetchFromGitHub
+
+# build time
+, cmake
+, pkg-config
+
+# run time
+, pcre2
+
+# update script
+, gitUpdater
+}:
+
+stdenv.mkDerivation rec {
+  pname = "libyang";
+  version = "2.0.194";
+
+  src = fetchFromGitHub {
+    owner = "CESNET";
+    repo = "libyang";
+    rev = "v${version}";
+    sha256 = "sha256-5dgSBXJIeGXT+jGqT2MFqtsEFcIn+ULjybnyXz+95Gk=";
+  };
+
+  nativeBuildInputs = [
+    cmake
+    pkg-config
+  ];
+
+  buildInputs = [
+    pcre2
+  ];
+
+  cmakeFlags = [
+    "-DCMAKE_INSTALL_LIBDIR=lib"
+    "-DCMAKE_INSTALL_INCLUDEDIR=include"
+    "-DCMAKE_BUILD_TYPE:String=Release"
+  ];
+
+  passthru.updateScript = gitUpdater {
+    inherit pname version;
+    rev-prefix = "v";
+  };
+
+  meta = with lib; {
+    description = "YANG data modelling language parser and toolkit";
+    longDescription = ''
+      libyang is a YANG data modelling language parser and toolkit written (and
+      providing API) in C. The library is used e.g. in libnetconf2, Netopeer2,
+      sysrepo or FRRouting projects.
+    '';
+    homepage = "https://github.com/CESNET/libyang";
+    license = with licenses; [ bsd3 ];
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ woffs ];
+  };
+}