This commit documents Avenger96 devicetree binding based on
STM32MP157 SoC.
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: NAlexandre Torgue <alexandre.torgue@st.com>