Stagefright: add support for gralloc OMX_UseBuffer.

XXX: This change should go along with a documentation change to
HardwareAPI.h that describes the new extension.

This change adds support for passing a buffer_handle_t to OMX_UseBuffer
during OMXCodec initialization. This new way of passing the
buffer_handle_t's replaces the old OMX_SetParameter-based approach, and
this change deprecates that interface, but still supports it for OMX IL
implementations that do not support the new interface.

Change-Id: If9c1cb3c6c349c54dab094aeb8af13eae9f85271
Signed-off-by: Jamie Gennis <jgennis@google.com>
Signed-off-by: Sarthak Aggarwal <sarthak@ti.com>