mfd: sec-core: Add support for the Samsung s2dos05

S2DOS05 is a panel/touchscreen PMIC, often found in
Samsung phones. We define regulator sub-device for which driver will
be added in subsequent patch. The device also has ADC for power and
current measurements.

Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20240617-starqltechn_integration_upstream-v5-2-ea1109029ba5@gmail.com


Signed-off-by: Lee Jones <lee@kernel.org>