dt-bindings: iio: humidity: hts221: introduce vdd regulator bindings
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/9579804f52ccab74a5ca5c7a55b5072b7304bea9.1606045688.git.lorenzo@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
authored by