Revert "omx: don't try to memcpy from/to opaque pointer/native handle."

This reverts commit a9f890380339302d1173cde5049782578f7725e4.

Bug: 78104183
Reason for revert: Breaks encoders

Change-Id: Iec7e0d3dd98e8d95d636b8bb50c2a6fdb55f5df4
2 files changed