[HLSL] Fix intrinsics header file 16 bit attribute macro to use version 6.2 (#185757)
There have been a couple builtins declared in a header file that specify
16 bit availability for shader model 6.0.
This is incorrect, it should be 6.2.
This bug was propagated for many of the waveops, and should be
corrected.
Fixes https://github.com/llvm/llvm-project/issues/185756