[rocm-libraries] ROCm/rocm-libraries#7852 (commit 8f6a245)

feat: [CK Tile] Adding gfx1250 wrappers for dense and scale
 builtins (#7852)

## Motivation

This PR is part of the [WMMA/MFMA] unification work. It adds all the
necessary dense and scale MMA gfx1250 builtins as amdgcn_mma structs.

## Technical Details

This change adds 5 new specializations for WMMA gfx1250 scale builtins
and 25 new for dense. On top of that we:
- dispatch between scale and scale16 builtin call
- add scale abstraction for WMMA
- small refactor for scale traits (data type to flag will also be needed
for dense builtins with packed data types)
- fix layout test (we store scale values in every byte)
- create gfx1250 target family

## Test Plan

All the new wrappers were added to the test suite in
`test_amdgcn_mma_layout.inc`.

## Test Result

Test pass locally, waiting for the CI.

## Submission Checklist

- [x] Look over the contributing guidelines at
https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.

Closes https://github.com/ROCm/rocm-libraries/issues/8957