ASoC: msm: Add support for afe disconnect command

For compressed playback to bypass ADM, AFE connect command
Is used when the session is closed AFE disconnect command
Should be issued.

Add the support for AFE disconnect command.

Change-Id: I4cc4e867c1be36fbc2659520fd14a356c8405f7b
Signed-off-by: Santosh Mardi <gsantosh@codeaurora.org>