ANDROID: GKI: USB: pd: Extcon fix for C current

This is a partial cherrypick.

It is required to notify device as selfpowered and bmaxpower as zero
even for non PD capable devices based on Type C current. Hence notify
as selfpowerer in bmAttributes of configuration descriptor in case of
medium or high Type C current.

Change-Id: Ie552560d93a8195f4c69fdaf6086ef3a52b31d39
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>
Signed-off-by: Jack Pham <jackp@codeaurora.org>
Bug: 150893404
(cherry picked from commit 29ffacc3)
Signed-off-by: Saravana Kannan <saravanak@google.com>