power: supply: bq25980: Implements POWER_SUPPLY_CHARGE_TYPE_BYPASS

This patch remaps the bypass operation from POWER_SUPPLY_CHARGE_TYPE_FAST
to POWER_SUPPLY_CHARGE_TYPE_BYPASS.

Signed-off-by: Ricardo Rivera-Matos <rriveram@opensource.cirrus.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>