[llvm] Reapply "[LLVM][TableGen] Parameterize NumToSkip in DecoderEmitter" (#136017) (PR #136019)

[Sergei Barannikov via llvm-commits]

s-barannikov wrote:

It should work the same for everything at global/namespace scope (but not at class scope, consider `class C { static int X; };`).
So yeah, it should be possible to make everything static rather than putting in an anonymous namespace. I'm neutral about this change.


https://github.com/llvm/llvm-project/pull/136019