Add bindings that describes STM32 Digital Filter for Sigma Delta
Modulators. DFSDM allows to connect sigma delta
modulators.
Signed-off-by: NArnaud Pouliquen <arnaud.pouliquen@st.com>
Acked-by: NRob Herring <robh@kernel.org>
Acked-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: NMark Brown <broonie@kernel.org>