ARM: dts: stm32: update mlahb node according to the bindings on stm32mp15

Update of the mlahb node according to to DT bindings using json-schema
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

arch/arm/boot/dts/stm32mp151.dtsi

@@ -1669,10 +1669,11 @@ gpioz: gpio@54004000 {
 		};
 	};
 
-	mlahb {
-		compatible = "simple-bus";
+	mlahb: ahb {
+		compatible = "st,mlahb", "simple-bus";
 		#address-cells = <1>;
 		#size-cells = <1>;
+		ranges;
 		dma-ranges = <0x00000000 0x38000000 0x10000>,
 			     <0x10000000 0x10000000 0x60000>,
 			     <0x30000000 0x30000000 0x60000>;