[llvm] [MC][WebAssembly] Add parameter to set table address type (PR #173063)

[Sam Clegg via llvm-commits]

sbc100 wrote:

> So I've just discovered that even when passing 32-bit tables to `wasm-ld` via a object file, `wasm-ld` transforms them to 64-bit tables. So I should probably add a `wasm-ld` test to that effect.

That sounds like maybe a separate bug in wasm-ld, so if you want to fix that as a followup that sounds reasonable too.

https://github.com/llvm/llvm-project/pull/173063