drm/amd/display: Bypass DET swath fill check for max clocks

[Description]
If validating for max voltage level (therefore max clocks) always pass over
the DET swath fill latency hiding check.

Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>