power: supply: ab8500: Remove unneeded semicolon

Fixes coccicheck warning:

drivers/power/supply/ab8500_fg.c:2224:5-6: Unneeded semicolon
drivers/power/supply/ab8500_fg.c:2227:4-5: Unneeded semicolon
drivers/power/supply/ab8500_fg.c:2334:3-4: Unneeded semicolon
drivers/power/supply/ab8500_fg.c:2342:3-4: Unneeded semicolon
drivers/power/supply/ab8500_fg.c:2350:3-4: Unneeded semicolon
drivers/power/supply/ab8500_fg.c:2358:3-4: Unneeded semicolon
drivers/power/supply/ab8500_fg.c:2366:3-4: Unneeded semicolon

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Ma Feng <mafeng.ma@huawei.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>