dev:pmi, target: check Usb connection for power off charging

The current driver only checks if the power on reason is PON1 and enters
the power off charging mode. This is not sufficient and one must also check
the charging path along with PON1 before enabling power off charging.

Change-Id: Ie7741d5fe3ca6d10f63d7e0d455fd0bae42e49e6
3 files changed