[AMDGPU] gfx11 ds instructions

MC layer support for ds instructions

Contributors:
Piotr Sobczak <Piotr.Sobczak@amd.com>

Patch 14/N for upstreaming of AMDGPU gfx11 architecture.

Depends on D126463

Reviewed By: arsenm, #amdgpu

Differential Revision: https://reviews.llvm.org/D126468