[X86] Correct some ADC/SBB with immediate scheduler data for Broadwell and Skylake.

Summary:
The AX/EAX/RAX with immediate forms are 2 uops just like the AL with immediate.

The modrm form with r8 and immediate is a single uop just like r16/r32/r64 with immediate.

Reviewers: RKSimon, andreadb

Reviewed By: RKSimon

Subscribers: gbedwell, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D58581

llvm-svn: 354754