[rocm-libraries] ROCm/rocm-libraries#6207 (commit cc56378)

[CK TILE] Unification Work – Add `print()` Utility to `MmaOpTraits` (#6207)

## Motivation

It would be useful to have a `print()` utility inside of unification
work's code scope, so that we can print all template params and derived
params of `amdgcn_mma` for easier debugging.

## Technical Details

Adding helper functions and struct to traits, adding `print_flags()` for
each `Default*CtrlFlags`, `amdgcn_target` and `MmaOpTraits` structs, and
adding `print()` for `amdgcn_mma`.

Note: the first commit is **not** in the scope of this PR. This PR
should be merged after https://github.com/ROCm/rocm-libraries/pull/5801
and https://github.com/ROCm/rocm-libraries/pull/5857.

## Test Plan

Adding test in layout test.

## 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.