[llvm] [Aarch64] Add missing earlyclobber to sqrshr and uqrshl instructions. (PR #77782)

[David Green via llvm-commits]

https://github.com/davemgreen commented:

That sounds OK. The test is probably good as-is. If you can move the other test then this LGTM too. Thanks

https://github.com/llvm/llvm-project/pull/77782