power: supply: charger-manager: Correct usage of CHARGE_NOW/FULL

The POWER_SUPPLY_CHARGE_NOW/FULL property reflects battery's charges
in uAh unit, but charger-manager has been used it wrongly as a
status field.

Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Jonathan Bakker <xc-racer2@live.ca>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>