The new bindings for the stm32 xspi is for new stm32 devices with
XSPI peripherals like the stm32h5 serie. This is close to the octo-spi.
Adapt the flash controller constants to the XSPI model especially.
This is done through a new xspi.h definition file.
Signed-off-by: Francois Ramu <francois.ramu@st.com>
Francois Ramu