pinctrl: pinctrl_stm32: Add stm32mp2 support

Add stm32mp2 compatible.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>

drivers/pinctrl/pinctrl_stm32.c

@@ -505,6 +505,8 @@ static const struct udevice_id stm32_pinctrl_ids[] = {
 	{ .compatible = "st,stm32mp157-pinctrl" },
 	{ .compatible = "st,stm32mp157-z-pinctrl" },
 	{ .compatible = "st,stm32mp135-pinctrl" },
+	{ .compatible = "st,stm32mp257-pinctrl" },
+	{ .compatible = "st,stm32mp257-z-pinctrl" },
 	{ }
 };