This change adds support for the hw-fence driver that initialize, expose
and manage the interfaces for the hw-fences, which are the synchronization
primitives to allow the hardware to hardware signalization of the fences
for the frame buffers shared between gpu and display hw-cores.
Change-Id: If2313585d5a9f3ac90e16aad3464600641a6fa04
Signed-off-by: Ingrid Gallardo <quic_ingridg@quicinc.com>
