[llvm] [AMDGPU][MC][GFX11] Always output wait_vdst and wait_exp (PR #66610)

[Jay Foad via llvm-commits]

https://github.com/jayfoad approved this pull request.

LGTM. I don't think the SP3 disassembler does this, but it'll still assemble the same so that doesn't matter.

https://github.com/llvm/llvm-project/pull/66610