pinctrl: freescale: Depend imx-scu driver on OF

Although the driver itself does not depend on OF itself, it selects
PINCTRL_IMX which depends on OF. So only select PINCTRL_IMX if OF is
already selected to ensure dependencies are met.

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Link: https://lore.kernel.org/20250514131342.755840-1-alexander.stein@ew.tq-group.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Author: tq-steina

drivers/pinctrl/freescale/Kconfig

@@ -20,6 +20,7 @@ config PINCTRL_IMX_SCMI
 
 config PINCTRL_IMX_SCU
 	tristate
+	depends on OF
 	depends on IMX_SCU || COMPILE_TEST
 	select PINCTRL_IMX