* Configure on Boot

Node name: config-on-boot
  It must be in root node. config-on-boot means to describe settings that needs
  to be set one time on boot but aren't owned by any driver, or the owned driver
  is too generic to handle such settings. For example, usb hub uses generic
  driver in usb core code, a on-board usb may need deassert reset pin.

Optional properties:
- output-gpios: Output gpio array that needs to set.
- output-gpio-values: This property is required if output-gpios is set.
  The value is a array of 0 or 1. Total count eaquals the number of gpios.
