[llvm] [RISCV][llvm-mca] Use Sched*MC for Zvk MC instructions and add Zvk tests for P600 (PR #89256)

[Michael Maitland via llvm-commits]

michaelmaitland wrote:

> Just want to make sure, are the rest of the 7 commits here all pre-commit tests? What about the changes on these tests after Sched*MC is applied?

llvm-mca will error out if  Sched*MC is not applied. I don't want to commit these tests before  Sched*MC patch. My plan is to squash everything in this patch into one commit, unless others have a different preference.

https://github.com/llvm/llvm-project/pull/89256