ARM: dts: stm32: fix i2c node typo in stm32h743

Replace upper case by lower case in i2c nodes name.
Signed-off-by: dillon min <dillon.minfei@gmail.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>

arch/arm/boot/dts/stm32h743.dtsi

@@ -175,7 +175,7 @@ i2c2: i2c@40005800 {
 			status = "disabled";
 		};
 
-		i2c3: i2c@40005C00 {
+		i2c3: i2c@40005c00 {
 			compatible = "st,stm32f7-i2c";
 			#address-cells = <1>;
 			#size-cells = <0>;
@@ -423,7 +423,7 @@ spi6: spi@58001400 {
 			status = "disabled";
 		};
 
-		i2c4: i2c@58001C00 {
+		i2c4: i2c@58001c00 {
 			compatible = "st,stm32f7-i2c";
 			#address-cells = <1>;
 			#size-cells = <0>;