mm-video: Free frame_parser in component de-init

frame_parser is alloc'ed in component init, it should be accordingly
freed in de-init rather than when input buffers are freed.
author: Leena Winterrowd <lenhardw@codeaurora.org>

Bug: 10668205

Change-Id: I2a8dd90b4831f9d9e7d50f5a1093d1a0055d3aad