pinctrl: stm32: Add st,stm32f769-pinctrl compatible string

Due to DT kernel synchronisation, add new pinctrl compatible
string for stm32f769.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
diff --git a/drivers/pinctrl/pinctrl_stm32.c b/drivers/pinctrl/pinctrl_stm32.c
index 24affe0..43dbdd9 100644
--- a/drivers/pinctrl/pinctrl_stm32.c
+++ b/drivers/pinctrl/pinctrl_stm32.c
@@ -421,6 +421,7 @@
 	{ .compatible = "st,stm32f429-pinctrl" },
 	{ .compatible = "st,stm32f469-pinctrl" },
 	{ .compatible = "st,stm32f746-pinctrl" },
+	{ .compatible = "st,stm32f769-pinctrl" },
 	{ .compatible = "st,stm32h743-pinctrl" },
 	{ .compatible = "st,stm32mp157-pinctrl" },
 	{ .compatible = "st,stm32mp157-z-pinctrl" },