MIPS: ingenic: jz4780: Fix I2C nodes to match DT doc

The "ingenic,jz4780-i2c" should have "ingenic,jz4770-i2c" as a fallback
compatible, as per the Device Tree documentation found in
Documentation/devicetree/bindings/i2c/ingenic,i2c.yaml.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

arch/mips/boot/dts/ingenic/jz4780.dtsi

@@ -339,7 +339,7 @@ uart4: serial@10034000 {
 	};
 
 	i2c0: i2c@10050000 {
-		compatible = "ingenic,jz4780-i2c";
+		compatible = "ingenic,jz4780-i2c", "ingenic,jz4770-i2c";
 		#address-cells = <1>;
 		#size-cells = <0>;
 
@@ -357,7 +357,7 @@ i2c0: i2c@10050000 {
 	};
 
 	i2c1: i2c@10051000 {
-		compatible = "ingenic,jz4780-i2c";
+		compatible = "ingenic,jz4780-i2c", "ingenic,jz4770-i2c";
 		#address-cells = <1>;
 		#size-cells = <0>;
 		reg = <0x10051000 0x1000>;
@@ -374,7 +374,7 @@ i2c1: i2c@10051000 {
 	};
 
 	i2c2: i2c@10052000 {
-		compatible = "ingenic,jz4780-i2c";
+		compatible = "ingenic,jz4780-i2c", "ingenic,jz4770-i2c";
 		#address-cells = <1>;
 		#size-cells = <0>;
 		reg = <0x10052000 0x1000>;
@@ -391,7 +391,7 @@ i2c2: i2c@10052000 {
 	};
 
 	i2c3: i2c@10053000 {
-		compatible = "ingenic,jz4780-i2c";
+		compatible = "ingenic,jz4780-i2c", "ingenic,jz4770-i2c";
 		#address-cells = <1>;
 		#size-cells = <0>;
 		reg = <0x10053000 0x1000>;
@@ -408,7 +408,7 @@ i2c3: i2c@10053000 {
 	};
 
 	i2c4: i2c@10054000 {
-		compatible = "ingenic,jz4780-i2c";
+		compatible = "ingenic,jz4780-i2c", "ingenic,jz4770-i2c";
 		#address-cells = <1>;
 		#size-cells = <0>;
 		reg = <0x10054000 0x1000>;