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/stm32mp15-bl32.dtsi b/fdts/stm32mp15-bl32.dtsi
index ca4bb3e..31b24f6 100644
--- a/fdts/stm32mp15-bl32.dtsi
+++ b/fdts/stm32mp15-bl32.dtsi
@@ -27,7 +27,7 @@
 		/delete-node/ stgen@5c008000;
 		/delete-node/ i2c@5c009000;
 
-		pin-controller@50002000 {
+		pinctrl@50002000 {
 			/delete-node/ fmc-0;
 			/delete-node/ qspi-clk-0;
 			/delete-node/ qspi-bk1-0;