Support ROHM BD797xx DACs

ROHM BD79700, BD79701 and BD79702 are very similar to the already
sipported BD79703. Main difference is the reduced number of channels.
Also, the *00 and *01 variants lack of the separate Vfs pin.

This series adds support for the BD79700, BD79701 and BD79702.

---

Matti Vaittinen (5):
  dt-bindings: Add ROHM BD7970x variants
  iio: dac: bd79703 Store device address to 'address'
  dac: bd79703: Add chip data
  iio: bd79703: Support BD79700 and BD79701
  iio: dac: bd79703: Support ROHM BD79702

 .../bindings/iio/dac/rohm,bd79703.yaml        |  33 +++--
 drivers/iio/dac/rohm-bd79703.c                | 116 +++++++++++++++---
 2 files changed, 126 insertions(+), 23 deletions(-)


base-commit: 543da6252b48bbfe13e194fb980bdd2b161f6838
-- 
2.49.0