iio: adc: mt6370: Fix ibus and ibat scaling value of some specific vendor ID chips

The scale value of ibus and ibat on the datasheet is incorrect due to the
customer report after the experimentation with some specific vendor ID
chips.

Fixes: c1404d1b

 ("iio: adc: mt6370: Add MediaTek MT6370 support")
Signed-off-by: ChiaEn Wu <chiaen_wu@richtek.com>
Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>
Link: https://lore.kernel.org/r/1681122862-1994-1-git-send-email-chiaen_wu@richtek.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>