The PMU initializes all GPIOs to inputs in NoPower, including GPIO2,
which drives GSM_ON and has an external pull-up. Furthermore, we may
have entered PMU.Standby with the modem up.
Unlike u-boot, qi didn't initialize the GPIOs. With this patch is
does.
Reported-by: Paul Ferster <fercerpav@gmail.com>
Signed-off-by: Werner Almesberger <werner@openmoko.org>