power: supply: ab8500: add missing MODULE_DEVICE_TABLE

This patch adds missing MODULE_DEVICE_TABLE definition which generates
correct modalias for automatic loading of this driver when it is built
as an external module.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/supply/ab8500_btemp.c

@@ -1097,6 +1097,7 @@ static const struct of_device_id ab8500_btemp_match[] = {
 	{ .compatible = "stericsson,ab8500-btemp", },
 	{ },
 };
+MODULE_DEVICE_TABLE(of, ab8500_btemp_match);
 
 struct platform_driver ab8500_btemp_driver = {
 	.probe = ab8500_btemp_probe,

drivers/power/supply/ab8500_charger.c

@@ -3705,6 +3705,7 @@ static const struct of_device_id ab8500_charger_match[] = {
 	{ .compatible = "stericsson,ab8500-charger", },
 	{ },
 };
+MODULE_DEVICE_TABLE(of, ab8500_charger_match);
 
 static struct platform_driver ab8500_charger_driver = {
 	.probe = ab8500_charger_probe,

drivers/power/supply/ab8500_fg.c

@@ -3212,6 +3212,7 @@ static const struct of_device_id ab8500_fg_match[] = {
 	{ .compatible = "stericsson,ab8500-fg", },
 	{ },
 };
+MODULE_DEVICE_TABLE(of, ab8500_fg_match);
 
 struct platform_driver ab8500_fg_driver = {
 	.probe = ab8500_fg_probe,