dt-bindings: pinctrl: Add rk3506 pinctrl support
Add the compatible string for the rk3506 SoC.
Signed-off-by: Ye Zhang <ye.zhang@rock-chips.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
authored by