We had supported the rk3036/rk3066/rk3188/rk3228/rk3288/rk3368/rk3399
family SoCs in linux kernel.

Let's add the other SoCs, in order to a better understanding from the
rockchip spi document.
Signed-off-by: NCaesar Wang <wxt@rock-chips.com>
Signed-off-by: NMark Brown <broonie@kernel.org>