[mips] Mark standard encoded instructions as not being in MIPS16e

Mark standard encoded instructions and pseudo "standard encoded"
as not being in MIPS16e by default.

Patch by Simon Dardis.

Differential revision: https://reviews.llvm.org/D48379

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@336893 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed