[llvm] [AMDGPU] Disable unaligned 2addr LDS operations in strict mode (PR #219004)

[Shilei Tian via llvm-commits]

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

LGTM. Being nitpick: it seems like we usually call it two-addr and three-addr. 2addr looks a little weird.

https://github.com/llvm/llvm-project/pull/219004