Convert the STM32 I2S bindings to DT schema format using json-schema.
Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200207120345.24672-1-olivier.moysan@st.comSigned-off-by: Mark Brown <broonie@kernel.org>