ASoC: msm: Destroy all CVD sessions after ending VoLTE call

MVM and CVS sessions are not destroyed after ending VoLTE or
CS call. Due to memory limitation on the DSP (only 2 sessions
can be pre-allocated), VoWLAN call will fail if attempted
after one CS call and one VoLTE call. To resolve this memory
limitation, changes made to destroy MVM and CVS sessions at
the end of VoLTE call.

Change-Id: I47b2f445f1b9ba2f9359ff840e9de0def11cc27f
Signed-off-by: Narsinga Rao Chella <nrchella@codeaurora.org>