Unhold BG call, in case of local disconnect

When there are active and held calls, active call disconnected
from headset, held call is not resumed. This change makes sure to
add the call to locally disconnected list so that background call
is unheld.

Bug: 63409763
Change-Id: Ib62c69ae6bee4c626cce409eedd1aabe6635718d
1 file changed