ASoC: wcd9320: use hwdep nodes to get calibration

Use hwdep node to use calibration and at the same
time keep the code backward compatible. Codec
driver can still use request_firmware to get the
calibration if hwdep is not available.

Change-Id: Ifb4c36632b890b61a0bc67d8af44a5a10233d7bd
Signed-off-by: Pavan Chikkala <pavanc@codeaurora.org>
3 files changed