[X86][MMX] Set PAVG/PHADD/PMIN/PMAX/PSIGN instructions to use same scheduler classes as SSE/AVX

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330085 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed