power: bq28400: Turn off green LED when DC-Jack removed

When battery reports full but DC-jack is removed then the battery
is discharging and the green LED should be off.

Change-Id: Ief9f89e8d9ab83228c5d0d6c53b4baa5db82d3b4
Signed-off-by: Amir Samuelov <amirs@codeaurora.org>