[llvm] [RISC-V] Support fixed vector type for inline asm (#117098) (PR #117100)

[Zhijin Zeng via llvm-commits]

zengdage wrote:

This patch is used to fix the issue https://github.com/llvm/llvm-project/issues/117098, please help to review, thanks!

https://github.com/llvm/llvm-project/pull/117100