Add Device Tree binding document for Liebherr's BK4 external SPI bus. Signed-off-by: Lukasz Majewski <lukma@denx.de> Signed-off-by: Rob Herring <robh@kernel.org>
Add Device Tree binding document for Liebherr's BK4 external SPI bus. Signed-off-by: Lukasz Majewski <lukma@denx.de> Signed-off-by: Rob Herring <robh@kernel.org>