[CK TILE] Unification Work – Add MFMA specialisations for `fp64_t` (#7104)
## Motivation
This PR adds two specialisations related to `fp64_t`.
## Technical Details
This adds two new specialisations for MFMA dense builtins, and adjusts
ABLayout and CLayout to L{K1BM} and L{M1BN}.
## Test Plan
All the new wrappers were added to the test suite in
test_amdgcn_mma_layout.inc.
## 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.
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