drm/xe/pf: Reset thresholds when releasing a VF config

As part of the VF config release, we should reset all parameters,
including thresholds, to always start with the clean VF config.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240830132100.1704-3-michal.wajdeczko@intel.com