[rocm-libraries] ROCm/rocm-libraries#5857 (commit d77cd41)

[CK TILE] Unification of Scale MFMA/WMMA Policy Structs (#5857)

## Motivation

The existing unification work supports DENSE and SPARSE intrinsics. In
this PR, we enable support for SCALE intrinsics and add example SCALE
implementations.

## Technical Details

Adding MFMA SCALE intrinsics support, adding tests for MFMA SCALE
intrinsics, and adding WMMA SCALE policy trait.

Note: fp6 SCALE intrinsics support is not included in this PR, as its
handling in ck_tile is currently more specialized and does not follow
the same pattern as other datatypes.

## Test Plan

Added new tests for the relevant SCALE specialisations.

## Test Result

Test should pass.

## Submission Checklist

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