qcacmn: Add scheduler history

To help triage issues where the scheduler thread is processing slowly,
add a scheduler processing history for offline analysis. This can also
be useful in determining if a processing delay in some operation is
attributed to the scheduler thread or not.

Change-Id: Icfea17efc34b2a23d4f8b2baebe08db4e2f6ce8b
CRs-Fixed: 2307252
2 files changed