power: supply: ipaq_micro_battery: remove unneeded semicolon

Fixes coccicheck warning:

./drivers/power/supply/ipaq_micro_battery.c:188:2-3: Unneeded semicolon
./drivers/power/supply/ipaq_micro_battery.c:152:3-4: Unneeded semicolon
./drivers/power/supply/ipaq_micro_battery.c:171:2-3: Unneeded semicolon

Signed-off-by: Chen Zhou <chenzhou10@huawei.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>