[AMDGPU][MC] Added validation of d16 and r128 modifiers of MIMG opcodes

See bugs 36094, 36095:
  https://bugs.llvm.org/show_bug.cgi?id=36094
  https://bugs.llvm.org/show_bug.cgi?id=36095

Differential Revision: https://reviews.llvm.org/D42692

Reviewers: vpykhtin, artem.tamazov, arsenm

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@324231 91177308-0d34-0410-b5e6-96231b3b80d8
7 files changed