ASoC: msm: qdsp6v2: Enable voice features for new voice sessions

With new Voice architecture, a voice session per subscription
will support different call types such as Voice/VoLTE/VoWLAN etc.
Enable voice features for the newly created voice sessions.

Change-Id: I01c8aaaa2ef447a78c2328d49aed7c6439299488
Signed-off-by: Shiv Maliyappanahalli <smaliyap@codeaurora.org>