[clang] [llvm] AMDGPU: Add MC layer support for load transpose instructions for gfx1250 (PR #146024)

[Jay Foad via llvm-commits]

jayfoad wrote:

> Co-authored with @jayfoad

For future reference, please don't do this! https://discourse.llvm.org/t/forbidding-username-in-commits/86997

You could use a standard git `Co-authored-by:` tag instead or just omit it. I don't need the credit.

https://github.com/llvm/llvm-project/pull/146024