Update libmfx-gen to version 21.3.4 / rev 2 via SR 922202
    
    https://build.opensuse.org/request/show/922202
    by user sndirsch + dimstar_suse
    - Update to version 21.3.4
      * [vp9d] fix unsigned qindex issue for vp9 segmentation case (#569)
      * [EncTools] Add closed GOP support for LPLA (#585)
      * [Jpegd] Modify the resolution judgment condition of the current jpeg (#522)
      * [LPLA] Zero sao_enabled flag for LPLA (#538)
      * [AVCe] Fix typos in NumRefActive (#595)
      * Refactor cmake (#466)
      * Refactor root cmake (#467)
      * cm: set correct timeout (#604)
      * [EncTools] Make IDRDist U32 (#596)
      * Refine for commit 2bc6fab
      * Revert "[Jpegd] Modify the resolution judgment condition of the current jpeg (#522)" (#619)
      * Revert "Fix vpp_reset and mfxvideovpp_query beh test (#573)" (#620)
      * [Jpegd] modify the resolution judgment condition of the current jpeg (#623)
      * Fix exception handling issue (#581)
      * [VPP] Enabled Denoise2(a