power: supply: max77705: Add charger driver for Maxim 77705

Add driver for Maxim 77705 switch-mode charger.
It providing power supply class information to userspace.

The driver is configured through DTS (battery and system related
settings).

Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20250123-starqltechn_integration_upstream-v17-3-8b06685b6612@gmail.com


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