mfd: max14577: Don't pass IRQ domain to mfd_add_devices

The max14577 MFD cells do not have any resources so the IRQ domain
passed to mfd_add_devices is not used.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>