feat(stm32mp1-fdts): change pin-controller to pinctrl

Due to commit updating kernel yaml file [1], we need to align TF-A DT
files to what is done in kernel.

[1] c09acbc499e8 ("dt-bindings: pinctrl: use pinctrl.yaml")

Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: Id717162e42d3959339d6c01883e87a9d4399f5d9
diff --git a/fdts/stm32mp131.dtsi b/fdts/stm32mp131.dtsi
index adf7a91..decd812 100644
--- a/fdts/stm32mp131.dtsi
+++ b/fdts/stm32mp131.dtsi
@@ -480,7 +480,7 @@
 		 * Break node order to solve dependency probe issue between
 		 * pinctrl and exti.
 		 */
-		pinctrl: pin-controller@50002000 {
+		pinctrl: pinctrl@50002000 {
 			#address-cells = <1>;
 			#size-cells = <1>;
 			compatible = "st,stm32mp135-pinctrl";