power: supply: Fix kerneldoc of power_supply_temp2resist_simple()

Fix W=1 compile warnings (invalid kerneldoc):

    drivers/power/supply/power_supply_core.c:747: warning: Function parameter or member 'temp' not described in 'power_supply_temp2resist_simple'
    drivers/power/supply/power_supply_core.c:747: warning: Excess function parameter 'ocv' description in 'power_supply_temp2resist_simple'

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>