twl4030_charger: increase end-of-charge current

twl4030_charger: increase end-of-charge current

The charger can only look at the current coming from the supply.
In the USB case, the OTG hardware is active and drawing ~80mA, so even
if the real charge current falls close to 0, the charger will see more
and continue charging, which means 80mA default is a bad choice.

On default OS this is not a problem because there is a daemon looking
at the real charge current reported by bq27500, this change is more for
people running custom OSes. Still a daemon should be preferred if
possible because if pandora is continuously kept busy and with the
screen on, the supply current may easily stay over 400mA (the maximum
possible end-of-charge setting).