mfd: max14577: Fix wakeup source leaks on device unbind

[ Upstream commit d905d06e ]

Device can be unbound, so driver must also release memory for the wakeup
source.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250406-mfd-device-wakekup-leak-v1-3-318e14bdba0a@linaro.org


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