d91de93436
The Driver Synchronization Core (DSC) is a set of synchronization primitives for use by the driver's orchestration layer. It provides APIs for ensuring safe state transitions (including bring up and tear down) of major driver objects: a single driver, associated psocs, and their associated vdevs. APIs are divided into two categories: mutual exclusion of conflicting transitions, and operation tracking, blocking, and waiting capabilities. For part 4, add the vdev-level implementation. Change-Id: I3f5ef0f7abf24a45d757d286d450ef086640c56a CRs-Fixed: 2290260