dt-bindings: ad5272: Add bindings for Analog Devices digital potentiometers

Add binding documentation for Analog Devices AD5272 and AD5274 digital
potentiometer devices.

Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Phil Reid 2018-02-09 08:57:26 +08:00 • committed by Jonathan Cameron
commit 8730e267a1