power: supply: max77976_charger: register power supply with devm_power_supply_register()

devm_power_supply_register_no_ws() is going to be removed.
Switch to the general registration API.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20241005-power-supply-no-wakeup-source-v1-7-1d62bf9bcb1d@weissschuh.net


Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>