intel_pxp_get_readiness_status
value = intel_pxp_get_readiness_status(i915->pxp, 0);
ret = intel_pxp_get_readiness_status(pxp, PXP_READINESS_TIMEOUT);
int intel_pxp_get_readiness_status(struct intel_pxp *pxp, int timeout_ms);