charge_manager: Assume all chargers are dedicated when in locked RO
charge_manager: Assume all chargers are dedicated when in locked RO

In locked RO, the PD state machine is crippled and unable to determine
whether a charger is dual-role capable. In order to charge in locked RO,
assume that all chargers are dedicated.

BUG=None
TEST=Manual on samus_pd. Lock system and reboot to RO. Insert Zinger and
verify that system charges 3A @ 5V.
BRANCH=Samus

Change-Id: I88a3ff248914cd95ebce8e9b91de1001c0f78b55
Signed-off-by: Shawn Nematbakhsh <5259333ce42e3ace6a73988cec7115ed9d3a661a@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/250650
Reviewed-by: Alec Berg <1a4429eeda29095a12e19a73405f80f5b7f37a63@chromium.org>
(cherry picked from commit 51227a3cca61bc7a81d391ffab46498ce4cf7fa3)
Signed-off-by: Alec Berg <1a4429eeda29095a12e19a73405f80f5b7f37a63@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/250710

thehobn/ec,thehobn/ec,thehobn/ec,thehobn/ec