dt-bindings: pinctrl: Add pinctrl support for RK3528

Add compatible string for RK3528 pin controller.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/20250228064024.3200000-3-jonas@kwiboo.se
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.yaml

@@ -44,6 +44,7 @@ properties:
       - rockchip,rk3328-pinctrl
       - rockchip,rk3368-pinctrl
       - rockchip,rk3399-pinctrl
+      - rockchip,rk3528-pinctrl
       - rockchip,rk3562-pinctrl
       - rockchip,rk3568-pinctrl
       - rockchip,rk3576-pinctrl