[PowerPC] Add missing record form instructions to the P9 Scheduling Model

A number of record form instructions were missing from the P9 scheduling
model. Added those instructions and marked the P9 model as complete.

Differential Revision: https://reviews.llvm.org/D38560

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@315313 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed