[llvm] [TableGen] Split large printInstruction() for NVPTX to avoid compiler limits (PR #218530)

[Kazu Hirata via llvm-commits]

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kazutakahirata wrote:

Drop the `TargetName` prefix here (and similarly for `OverflowProgram` and the interpreter loop below). These are now function-local `static const` arrays inside `printInstruction()`, just like `OpInfo0` and `AsmStrs` in `getMnemonic()`:
```suggestion
  O << "  static const " << OffsetType << " OpcodeToOffset[] = {\n";
```

https://github.com/llvm/llvm-project/pull/218530