dt-bindings: iio: adc: ad7768-1: document regulator provider property
The AD7768-1 provides a buffered common-mode voltage output
on the VCM pin that can be used to bias analog input signals.
Add regulators property to enable the use of the VCM output,
referenced here as vcm-output, by any other device.
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Jonathan Santos <Jonathan.Santos@analog.com>
Link: https://patch.msgid.link/33c02a1fb9d839f62da5237f9476ccbf14271b6d.1749569957.git.Jonathan.Santos@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>