qcom-charger: Don't automatically set USB_PD type when PD_ACTIVE=1

The POWER_SUPPLY_PROP_PD_ACTIVE property is intended to be a flag
set whenever the PD PHY is in use. But this includes attempts to
establish communication, which may involve trying to perform a hard
reset to see if the port partner responds. Thus updating the
psy_desc.type field to 'USB_PD' right when PD_ACTIVE=1 is premature
as the port partner may not be PD-capable and it could be un-set.
Instead allow the PD driver to directly update POWER_SUPPLY_PROP_TYPE
only after it is sure PD communication has succeeded.

Change-Id: Iae6804bcb3121e0852ec5d14d0939623b97a6e67
Signed-off-by: Jack Pham <jackp@codeaurora.org>