[llvm] [RISCV][MCA] Consolidate inputs for different SchedModel tests (PR #173926)

[Pengcheng Wang via llvm-commits]

wangpc-pp wrote:

Thanks! I like the direction we are going to! I don't know if we can generate such .s files from unified-db or riscv-opcodes so that we don't miss any extension and the structure can be well organized by extension name.

https://github.com/llvm/llvm-project/pull/173926