The GENLOCK_IOC_RELEASE ioctl is now deprecated. This was done because to
avoid race conditions where the handle was released before another client
tried to unlock it.
(cherry picked from commit d1514357422ce130d3e2776f984294a9efeea83e)
Change-Id: Iaf433a79dd0dad992cbf67180765718beec4eb1c
CRs-fixed: 333141
Add libgenlock which is a cross-process buffer locking API. libgenlock
provides the ability to create, attach, release locks. It also provides
a mechanism to lock and unlock buffers for read/write purposes.
Change-Id: I5172a82539b83bcb1226e3fd4f7b80a5c7f31016
