[llvm] [AMDGPU] fix the check of inst-order in a test (PR #90744)

[Jay Foad via llvm-commits]

jayfoad wrote:

All these checks have been autogenerated (see comment line 1 of the test) so you really should not edit them by hand. If you do, your edits will get lost the next time some re-auto-generates the checks.

https://github.com/llvm/llvm-project/pull/90744