blacklist.conf: ff924c5a1ec7
    
    ff924c5a1ec7 ("x86/pti: Fix section mismatch warning/error")'s Fixes tag is
    wrong. It should point to:
    
      16a3fe634f6a ("x86/mm/pti: Clone kernel-image on PTE level for 32 bit")
    
    which introduced the section mismatch by using pti_user_pagetable_walk_pte()
    in pti_clone_pgtable().
    
    Signed-off-by: Borislav Petkov <bp@suse.de>