Stop baActivityChkTimer only if last session is LINK_IDLE_STATE

When stopping baActivityChkTimer, check if last active session
is IDLE instead of concurrency_session_running().
Expand existing API to get activeSessionCount whether to filter
 out bssId or not.
Turn on critical BA related message to further debug BA related
issue.

CRs-Fixed: 477627

Change-Id: Iffb34e5ecbda6906d80ceb7a76fb1589c637cf8b
5 files changed
tree: 2ee5a77e6632660be01c57afe172b779832610d9
  1. CORE/
  2. firmware_bin/
  3. riva/
  4. Android.mk
  5. Kbuild
  6. Kconfig