U-Boot GTA02: Always enable charger on startup
This patch changes U-Boot to always enable the charger on startup. We
currently seem to have two ways of disabling the charger, _even when it
was already enabled_:
1) Press power button briefly (<1 s) while off and connected to power.
2) Try to turn on the device (by power button or plugging in power) when the
power source detected as 100 mA only with no (or discharged) battery
inserted.
There is no point in disabling the charger in these cases or in general.
Signed-off-by: Rask Ingemann Lambertsen <ccc94453@vip.cybercity.dk>