ASoC: wcd9xxx: Update sound card's online/offline state

Update sound card's state when it went to online/offline so application
can monitor and wait for card's online prior to issue command.

Change-Id: I7cfb120e56e97cf743782a8b4b2fcbad242b227b
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
(cherry picked from commit 4aee97adf03305b3896f8e74977ef917c2fd9a32)
4 files changed