ASoC: msm: qdsp6v2: Add FLAC in compress offload path

Add FLAC format in compress offload driver, and asm
module.

Change-Id: I818ace8397e761b1acff7f9b2eab6e0103ed78c8
Signed-off-by: Apurupa Pattapu <apurupa@codeaurora.org>
Signed-off-by: Banajit Goswami <bgoswami@codeaurora.org>
Signed-off-by: Meng Wang <mwang@codeaurora.org>