[llvm] [MVT][TableGen] Extend Machine Value Type to `uint16_t` (PR #99657)

[Pengcheng Wang via llvm-commits]

wangpc-pp wrote:

I think the community needs to be notified by this change (the impact is big), please file a RFC on the discourse forum. :-)

https://github.com/llvm/llvm-project/pull/99657