Convert the GPIO driver to use the GPIO irqchip library GPIOLIB_IRQCHIP instead of reimplementing the same.
Reviewed-by: Johan Hovold Signed-off-by: Nishad Kamdar Signed-off-by: Greg Kroah-Hartman
* Convert all uses of the old GPIO API from <linux/gpio.h> to the GPIO descriptor API in <linux/gpio/consumer.h> and look up GPIO lines from device tree or ACPI.
