power: supply: ab8500: Make use of the helper component_compare_dev

Use the common compare helper from component.

Cc: Sebastian Reichel <sre@kernel.org>
Cc: linux-pm@vger.kernel.org
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Link: https://lore.kernel.org/r/20220214060819.7334-22-yong.wu@mediatek.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>