[clang] [AArch64][SME] Fix bug on SMELd1St1 (PR #118109)

[via cfe-commits]

wwwatermiao wrote:

> > Hi, @momchil-velikov, Hi, @CarolineConcatto, it will be great if you help to review this patch as soon as possible! Thank you！
> 
> Patch is accepted, you don't need more approvals, go ahead and commit.

Thank you for your reply, could you help me merge this since I am not a commiter? 

https://github.com/llvm/llvm-project/pull/118109