msm: mdss: dp: fix audio teardown sequence

msm: mdss: dp: fix audio teardown sequence

First update the audio switch node to indicate that the cable was
disconnected. Wait for the audio codec to indicate that the teardown
of the audio path has been completed, timing out after three
seconds. This ensures that the audio framework will start and end
the audio teardown while the interface VSync is still running,
ensuring a graceful shutdown of the audio path.

CRs-Fixed: 1074218
Change-Id: Ia9c792613e5cd9ac273185c6b2f4b30b5df67496
Signed-off-by: Tatenda Chipeperekwa <tatendac@codeaurora.org>