Merge pull request #228556 from MatthewCroughan/mc/svt-av1-lto

svt-av1: enable link-time-optimization

pkgs/tools/video/svt-av1/default.nix

···
     nasm
   ];
 
+  cmakeFlags = [
+    "-DSVT_AV1_LTO=ON"
+  ];
+
   passthru.updateScript = gitUpdater {
     rev-prefix = "v";
   };