dts/bindings: introduce a new octospi devicetree

Add the DTS binding for OCTOSPI interface for the stm32 devices
from STMicroelectronics.
This corresponds to a NOR octo SPI flash.
In this config, there is only on NOR-flash device.

Signed-off-by: Francois Ramu <francois.ramu@st.com>
2 files changed