*
* Update OS support fields and doing a _OSC Query to obtain an update
* from Firmware on supported control bits.
*
* Update OS support fields and doing a _OSC Query to obtain an update
* from Firmware on supported control bits.
* choose from highest power _SxD to lowest power _SxW
* else // no _PRW at S-state x
* choose highest power _SxD or any lower power
* choose from highest power _SxD to lowest power _SxW
* else // no _PRW at S-state x
* choose highest power _SxD or any lower power