No such feature on any aircraft. Was proposed on the A380 but never made it past planning. Auto-TCAS did make it into the A380 and is planned for retrofit on the rest. It's just software in the autoflight system. My understanding was that far more mistakes were being made with TCAS than CFIT avoidance.
Maybe you're taking about the stick full back CFIT maneuver specific to FBW Airbus? That's not really specific to GPWS, and would require hardware not only to let auto flight override the pilot, but a complete overhaul of computers, sensors and power to bring up the reliability.