arm64: defconfig: enable Maxim max77759 driver

Enable the Maxim max77759 as this is used by the gs101-oriole and
gs101-raven (Google Pixel 6 and Pixel 6 Pro) boards,

The child devices' defaults are based on this MFD driver's state, so
this commit enables those implicitly as well.

Signed-off-by: André Draszik <andre.draszik@linaro.org>
Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
Link: https://lore.kernel.org/r/20250524-b4-max77759-mfd-dts-v2-1-b479542eb97d@linaro.org


Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>