Stop InCall Notification to avoid track leak

There is no ringtone when a call is in comming. The audio track is
out of limit, for the notification tone can not be recycled timely.
Here is the steps to reproduce this issue.
1. Call the test device and keep it in communication
2. Send message to test device, more than 15 messages.
3. Stop call on test device, re-call the test device.
4. This is no ringtone now, if not, re try the previous steps.

Test: make, take a photo, record a video and play video

Change-Id: Iba4a41d7b8b601fa500b8a60cadaf04651f37fed
Signed-off-by: luochaojiang <luochaojiang@xiaomi.com>