ANDROID: GKI: power_supply: add properties to report parallel connection topology

Add power_supply properties to report and the connection topology
of parallel charger(input and output).

Signed-off-by: Ashay Jaiswal <ashayj@codeaurora.org>
(cherry picked from commit ad45db3e)
Signed-off-by: Mark Salyzyn <salyzyn@google.com>
Bug: 150789066
Change-Id: Id4e9e3c23d83e58906e0cb3dd208b57089eed81a