[llvm] [AMDGPU][True16][test] update VOPC/VOPCX test for true16/fake16 (PR #112829)

[Ivan Kosarev via llvm-commits]

https://github.com/kosarev commented:

Adding more reviewers to seek a wider consensus on sorting MC tests throughout.

I did a quick and dirty check with `diff -u <(git show @~1:./$1 | grep '^v_' | sort) <(cat $1 | grep '^v_' | sort)` to ensure we haven't lost any instructions, but maybe we would need something more reliable and sophisticated to also catch accidentally removed comments, commented-out/FIXME test cases, etc.

https://github.com/llvm/llvm-project/pull/112829