Enable incall transparency by default [2/2]

Change-Id: Id45603dd57bbedba861df891f41200d5fb4fb253
InCallUI: Store dialpad showing state (2/2)

Change-Id: I50769ee6e734c3a962bdf4fef82e9bbedbdf7666
Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>