devfreq: spdm: Add snapshot of devfreq-spdm driver

This is a snapshot of the devfreq-spdm driver as of msm-3.18
'commit fa156811a90f ("ASoC: msm: enable group config for both
tx and rx").

Change-Id: I11fbcbfbca8b9bc30b9b43d08557fd5774e1444d
Signed-off-by: Odelu Kukatla <okukatla@codeaurora.org>
7 files changed