[llvm-branch-commits] [llvm] AMDGPU: Add version of isImmOperandLegal for MCInstrDesc (PR #155560)

[Shilei Tian via llvm-branch-commits]

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

This is more like an NFCI.

https://github.com/llvm/llvm-project/pull/155560