use worse case watermark (consider both DCC and VM)
to keep golden consistent regardless of DCC
Signed-off-by: NTony Cheng <tony.cheng@amd.com>
Reviewed-by: NAric Cyr <Aric.Cyr@amd.com>
Acked-by: NHarry Wentland <harry.wentland@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>