Make this array const.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197814 91177308-0d34-0410-b5e6-96231b3b80d8
Support for microMIPS FPU instructions 1.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197815 91177308-0d34-0410-b5e6-96231b3b80d8