x86: Use the new CondInst format for moves to/from control registers.
x86: Use the new CondInst format for moves to/from control registers.

The condition is whether the control register index is valid.

Change-Id: I8a225fcfd4955032b5bbf7d3392ee5bcc7d6bc64
Reviewed-on: https://gem5-review.googlesource.com/4581
Reviewed-by: Michael LeBeane <5498aaccef3ca9a2524482c1d8ef4036ed92fd77@amd.com>
Maintainer: Gabe Black <5c8aa1266c03186393d9e7b3b4e3b14239af8201@google.com>

gem5/gem5,sobercoder/gem5,TUD-OS/gem5-dtu,gem5/gem5,sobercoder/gem5,TUD-OS/gem5-dtu,TUD-OS/gem5-dtu,gem5/gem5,gem5/gem5,gem5/gem5,sobercoder/gem5,sobercoder/gem5,gem5/gem5,sobercoder/gem5,gem5/gem5,sobercoder/gem5,TUD-OS/gem5-dtu,TUD-OS/gem5-dtu,sobercoder/gem5,TUD-OS/gem5-dtu,TUD-OS/gem5-dtu