dts: arm: st: h743/h753: streamline flash properties

Some flash properties are currently in the individual SoC definitions,
while they are common to the whole STM32H743/753 SoC line. Move them one
level higher.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

h753

Author: aurel32

dts/arm/st/h7/stm32h743.dtsi

@@ -11,6 +11,8 @@
 	soc {
 		flash-controller@52002000 {
 			flash0: flash@8000000 {
+				compatible = "soc-nv-flash";
+				label = "FLASH_STM32";
 				write-block-size = <32>;
 				erase-block-size = <DT_SIZE_K(128)>;
 			};

dts/arm/st/h7/stm32h743Xi.dtsi

@@ -11,8 +11,6 @@
 	soc {
 		flash-controller@52002000 {
 			flash0: flash@8000000 {
-				compatible = "soc-nv-flash";
-				label = "FLASH_STM32";
 				reg = <0x08000000 DT_SIZE_K(2048)>;
 			};
 		};

dts/arm/st/h7/stm32h753Xi.dtsi

@@ -11,8 +11,6 @@
 	soc {
 		flash-controller@52002000 {
 			flash0: flash@8000000 {
-				compatible = "soc-nv-flash";
-				label = "FLASH_STM32";
 				reg = <0x08000000 DT_SIZE_K(2048)>;
 			};
 		};