## Motivation
Since gfx90a has no native support for FP8 datatype, all FP8 tests
should be disabled there by default.
## Technical Details
The test_fmha_fwd_fp8fp16 is the last failing test in CK on gfx90a with
staging compiler.
## Test Plan
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## Test Result
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## Submission Checklist
- [ ] Look over the contributing guidelines at
https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.
3a76dfd28f