ARM: dts: stm32: DT sync with kernel v5.10-rc1 for MCU's boards

Device tree alignment with kernel v5.10-rc1.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
diff --git a/arch/arm/dts/stm32f429-disco-u-boot.dtsi b/arch/arm/dts/stm32f429-disco-u-boot.dtsi
index 52f8032..77d5ea0 100644
--- a/arch/arm/dts/stm32f429-disco-u-boot.dtsi
+++ b/arch/arm/dts/stm32f429-disco-u-boot.dtsi
@@ -123,7 +123,7 @@
 };
 
 &pinctrl {
-	usart1_pins_a: usart1@0	{
+	usart1_pins_a: usart1-0	{
 		u-boot,dm-pre-reloc;
 		pins1 {
 			u-boot,dm-pre-reloc;