Trigger conditions for beeps in x86-power-control

[P. K. Lee (李柏寬)]

Hi Bills,

I observed that the beep sound was triggered by receiving the psPpowerOKDeAssert event in the state of powerStateOn, 
but my machine does not have the SIO_S5 GPIO events, so I need to add a judgment when a beep sound is needed.

The question is, is the forced shutdown (pressing the power button for more than 4 seconds) included in "DC power is unexpectedly lost" mentioned in the comment?

Thanks,
P.K.