At the default 5s, hp trackpads don't attach to VoodooPS2Trackpad properly, so increased to 7 gives enough time to attach it seems. Only tested on HP ProBook 650 G2, booting fresh and from Windows BootCamp no instabilities.
Note that this is a stop gap PR until I can figure out a better way to have VoodooSMBus, VoodooRMI and VoodooPS2 to communicate to prevent this race condition.
At the default 5s, hp trackpads don't attach to VoodooPS2Trackpad properly, so increased to 7 gives enough time to attach it seems. Only tested on HP ProBook 650 G2, booting fresh and from Windows BootCamp no instabilities.