[mlir] Update SVE integration tests to use mlir-cpu-runner

With the recent addition of "-mattr" and "-march" to the list of options
supported by mlir-cpu-runner [1], the SVE integration
tests can be updated to use mlir-cpu-runner instead of lli. This will
allow better code re-use and more consistency

This patch updates 2 tests to demonstrate the new logic. The remaining
tests will be updated in the follow-up patches.

[1] https://reviews.llvm.org/D146917

Depends on D155403

Differential Revision: https://reviews.llvm.org/D155405