HID: cp2112: explicitly require irqchip support in gpiolib

Since the gpio-as-irq support has been added, the driver now depends
on proper support being available in gpiolib.

Fixes: 13de9cca

 ("HID: cp2112: add IRQ chip handling")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>