[tablegen] Merge duplicate definitions of getMinimalTypeForRange. NFC.

Summary: Depends on D25614

Reviewers: qcolombet

Subscribers: qcolombet, beanz, mgorny, llvm-commits

Differential Revision: https://reviews.llvm.org/D25617

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@287438 91177308-0d34-0410-b5e6-96231b3b80d8
6 files changed