spi: spi-rockchip: Add rk3568-spi compatible
This adds a compatible string for the SPI controller found on
the RK3566 and RK3568 SoCs.
Signed-off-by: Nicolas Frattaroli <frattaroli.nicolas@gmail.com>
Link: https://lore.kernel.org/r/20211126154344.724316-2-frattaroli.nicolas@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
authored by