drm/amd/display: Enable SubVP for high refresh rate displays

[Description]
- Add debug option to enable SubVP for high refresh rate displays
- For now limit the enabled modes based on a table in debug options
- Currently disabled by default

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>