android: sync: fix compilation errors when reverting sync fence api

Fix compilation errors when reverting sync driver
changes to avoid using dma-buf sync fence APIs.
These changes are causing some random stability
issues, reverting changes until root cause is found.

Change-Id: I4131b9535c27b4615976de1a9ffe576088c7a89e
Signed-off-by: Ingrid Gallardo <ingridg@codeaurora.org>