sthal: return right state to ST framework in incall mode

- SoundTrigger isn’t able to enable during voice/voip call.
  All request from soundtrigger framework will be saved into
  recover list, and all models will be resumed after ending call.
- According to this sequence, soundtrigger hal shouldn’t return -EAGAIN
  when ST framework try to start/stop sound model during voice/voip
  call.

Bug:  140710474
Test: soundtrigger function after killing audioserver and ending voice/voip call.

Change-Id: I27ec61d9b27bc9382848267187a85a35f43a4ef5
Signed-off-by: Jasmine Cha <chajasmine@google.com>
1 file changed