Move the contents of hdd_dsc to the new files added in osif/sync as part
of Ica94d32028d10d344294d6cc12d91a06efe1ab6c.
Change-Id: I556e9d2833edd2bd26266496b6000347649c5fbe
CRs-Fixed: 2396512
Currently, APIs in the dsc_*_trans_assert() family assert a transition
is in flight on the given node itself. Instead, replace this API family
with another, dsc_*_assert_trans_protected(), which assert a
transition is in flight on the given node or any of its ancestors.
Change-Id: I5fb07000f955a49a4e5529806f4e49d9dbc8acb7
CRs-Fixed: 2347789
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 1, add common infrastructure and headers.
Change-Id: Id290e66d2dccd28b89fed5f285d3692ff3c814e7
CRs-Fixed: 2290260
