[llvm] [AMDGPU] Make gfx11 vop1 disassembler tests use strict-whitespace (PR #84078)

[Jay Foad via llvm-commits]

https://github.com/jayfoad approved this pull request.

Agreed. Some disassembler tests use -strict-whitespace to check for genuine whitespace problems, so I think for consistency we might as well move towards always using -strict-whitespace.

https://github.com/llvm/llvm-project/pull/84078