[mips] MIPS32/64 itineraries

Itineraries for some pre MIPSR6 and EVA instructions. Some pseudo expanded
instructions are marked as having no scheduling info.

Reviewers: dsanders, vkalintiris

Differential Review: http://reviews.llvm.org/D20418


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272648 91177308-0d34-0410-b5e6-96231b3b80d8
9 files changed