[llvm] Include AArch64 SME builtins to compiler-rt for Bazel. (PR #196607)

[Sam Fuller via llvm-commits]

sgfuller wrote:

Hello, I'm new to LLVM so your feedback is welcome and appreciated :). As far as I can tell, the ability to get SME sources for non-Android builds right now is missing in the Bazel layer (please correct me if my interpretation is wrong). I'd like to expand this to other ARM 64 platforms. Thanks for your help.

https://github.com/llvm/llvm-project/pull/196607