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/stm32f769-disco.dts b/arch/arm/dts/stm32f769-disco.dts
index 8d51e5b..03cfbd7 100644
--- a/arch/arm/dts/stm32f769-disco.dts
+++ b/arch/arm/dts/stm32f769-disco.dts
@@ -19,7 +19,7 @@
 		stdout-path = "serial0:115200n8";
 	};
 
-	memory {
+	memory@c0000000 {
 		device_type = "memory";
 		reg = <0xC0000000 0x1000000>;
 	};
@@ -30,11 +30,11 @@
 
 	leds {
 		compatible = "gpio-leds";
-		green {
+		led-green {
 			gpios = <&gpioj 5 GPIO_ACTIVE_HIGH>;
 			linux,default-trigger = "heartbeat";
 		};
-		red {
+		led-red {
 			gpios = <&gpioj 13 GPIO_ACTIVE_HIGH>;
 		};
 	};