[llvm] [AMDGPU][CodeGen][True16][Test] add test files for gfx11 vop1 instructions in true16/fake16 format (PR #106089)

[Joe Nash via llvm-commits]

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Sisyph wrote:

I don't agree with the renaming. This file is specific to true16 errors, and so saying it in the name is helpful. In addition, we already have files for both true16 specific errors, and non-true16 errors in vop2 (gfx11_asm_vop2_err.s gfx11_asm_vop2_t16_err.s)

https://github.com/llvm/llvm-project/pull/106089