[PowerPC, AsmParser] Enable the mnemonic spell corrector

r307148 added an assembly mnemonic spelling correction support and enabled it
on ARM. This enables that support on PowerPC as well.

Patch by Dmitry Venikov, thanks!

Differential Revision: https://reviews.llvm.org/D40552

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@320911 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed