[llvm] [AMDGPU][True16][test] update VOP2 asm/dasm file with true16/fake16 (PR #113101)

[Brox Chen via llvm-commits]

broxigarchen wrote:

> For clarity, please correct these typos in the commit message.
> 
> > ```
> > 1. duplicate files to be true16/fake16 by adding "-mattr=+-real-true16" while true16 test file will be updated to true16 format when the true16 instructions are supported
> > ```
> 
> should be "-mattr=+real-true16"
> 
> > ```
> > 2. sort "t16_err.s" and "t16_promote.s" tests to alphabetic order. 
> > ```
> 
> should be "*t16_err.s" and "*t16_promote.s"

done!

https://github.com/llvm/llvm-project/pull/113101