[CodeGen] Always print register ties in MI::dump()

It was the case when calling MO::dump(), but MI::dump() was still
depending on hasComplexRegisterTies().

The MIR output is not affected.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@343107 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed