intel_pps_vdd_off_unlocked
intel_pps_vdd_off_unlocked(intel_dp, true);
intel_pps_vdd_off_unlocked(intel_dp, false);
intel_pps_vdd_off_unlocked(intel_dp, false);
void intel_pps_vdd_off_unlocked(struct intel_dp *intel_dp, bool sync);