arm64: dts: marvell: use the proper I2C controller compatible string for 7K/8K

The I2C controller found in the Marvell Armada 7K/8K provides the
bridge/offloading features, so the Device Tree should use the
marvell,mv78230-i2c compatible string instead of marvell,mv64xxx-i2c.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>

arch/arm64/boot/dts/marvell/armada-ap806.dtsi

@@ -184,7 +184,7 @@ spi0: spi@510600 {
 			};
 
 			i2c0: i2c@511000 {
-				compatible = "marvell,mv64xxx-i2c";
+				compatible = "marvell,mv78230-i2c";
 				reg = <0x511000 0x20>;
 				#address-cells = <1>;
 				#size-cells = <0>;