ASoC: wcd: add calibration data for tombak

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

Change-Id: I1c5c5723827da911f8eaa5e5490757d329ec0b45
Signed-off-by: Yeleswarapu Nagaradhesh <nagaradh@codeaurora.org>