[llvm] [AMDGPU] Update uses of new VOP2 pseudos for GFX12 (PR #78155)

[Mariusz Sikora via llvm-commits]

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@@ -1,7 +1,8 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 ; RUN: llc -march=amdgcn -mcpu=tahiti -verify-machineinstrs < %s | FileCheck --check-prefixes=SI %s
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mariusz-sikora-at-amd wrote:

march -> mtriple

https://github.com/llvm/llvm-project/pull/78155