4250372925
add memory ops support so that different implementations can exist for memory_alloc, memory_free, memory_map and memory_unmap, dma buf attach, detach, map, unmap and get buffer region in upstream and downstream drivers. Change-Id: Ifabc34e7a8b0284579c1bc4a8f477fe558d068f4 Signed-off-by: Darshana Patil <quic_darshana@quicinc.com>