dt-bindings: iio: potentiometer: Add AD5110 in trivial-devices

Add AD5110, a Nonvolatile Digital Potentiometer into
trivial-devices.yaml.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mugilraj Dhavachelvan <dmugil2000@gmail.com>
Link: https://lore.kernel.org/r/20210814175607.48399-2-dmugil2000@gmail.com


Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>