Issue: Release_recording() can be called with any Imemory pointer
sent earlier. HAL cannot use this pointer to recognize video frame
to match before release this buffer to kernel.
Fix: Buffer identity is introduced to every video buffer and released
buffer can be found by comparing identity.
CRs-Fixed: 1026840
Change-Id: I287d1276fbf2241a2fc6d470e887a91e1daeca4d
