+- interrupts : The interrupts to the parent controller raised when GPIOs
+ generate the interrupts. If the controller provides one combined interrupt
+ for all GPIOs, specify a single interrupt. If the controller provides one
+ interrupt for each GPIO, provide a list of interrupts that correspond to each
+ of the GPIO pins. When specifying multiple interrupts, if any are unconnected,
+ use the interrupts-extended property to specify the interrupts and set the
+ interrupt controller handle for unused interrupts to 0.