[llvm] [MIPS] Add Scheduling model for MIPS i6400 and i6500 CPUs (PR #132704)

[Mallikarjuna Gouda via llvm-commits]

mgoudar wrote:

> > LLVM Buildbot has detected a new failure on builder `llvm-nvptx-nvidia-win` running on `as-builder-8` while building `llvm` at step 7 "test-build-unified-tree-check-llvm".
> > Full details are available at: https://lab.llvm.org/buildbot/#/builders/54/builds/8671
> > Here is the relevant piece of the build log for the reference
> 
> You forgot to add `lit.local.cfg` like this: https://github.com/llvm/llvm-project/blob/main/llvm/test/tools/llvm-mca/RISCV/lit.local.cfg Which limits the tests to LLVM that has the MIPS backend (or you can add `REQUIRES: mips-registered-target` to every single tests under the Mips folder, but usually people prefer lit.local.cfg)

Thank you. I will add lit.local.cfg and create new pr. thanks for your feedback.

https://github.com/llvm/llvm-project/pull/132704