ARM: EXYNOS: Add aliases for i2c controller

Add aliases to determine the i2c controller instance.

Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/boot/dts/exynos5250.dtsi

@@ -31,6 +31,15 @@
 		gsc1 = &gsc_1;
 		gsc2 = &gsc_2;
 		gsc3 = &gsc_3;
+		i2c0 = &i2c_0;
+		i2c1 = &i2c_1;
+		i2c2 = &i2c_2;
+		i2c3 = &i2c_3;
+		i2c4 = &i2c_4;
+		i2c5 = &i2c_5;
+		i2c6 = &i2c_6;
+		i2c7 = &i2c_7;
+		i2c8 = &i2c_8;
 	};
 
 	gic:interrupt-controller@10481000 {
@@ -92,71 +101,71 @@
 		interrupts = <0 54 0>;
 	};
 
-	i2c@12C60000 {
+	i2c_0: i2c@12C60000 {
 		compatible = "samsung,s3c2440-i2c";
 		reg = <0x12C60000 0x100>;
 		interrupts = <0 56 0>;
 		#address-cells = <1>;
 		#size-cells = <0>;
 	};
 
-	i2c@12C70000 {
+	i2c_1: i2c@12C70000 {
 		compatible = "samsung,s3c2440-i2c";
 		reg = <0x12C70000 0x100>;
 		interrupts = <0 57 0>;
 		#address-cells = <1>;
 		#size-cells = <0>;
 	};
 
-	i2c@12C80000 {
+	i2c_2: i2c@12C80000 {
 		compatible = "samsung,s3c2440-i2c";
 		reg = <0x12C80000 0x100>;
 		interrupts = <0 58 0>;
 		#address-cells = <1>;
 		#size-cells = <0>;
 	};
 
-	i2c@12C90000 {
+	i2c_3: i2c@12C90000 {
 		compatible = "samsung,s3c2440-i2c";
 		reg = <0x12C90000 0x100>;
 		interrupts = <0 59 0>;
 		#address-cells = <1>;
 		#size-cells = <0>;
 	};
 
-	i2c@12CA0000 {
+	i2c_4: i2c@12CA0000 {
 		compatible = "samsung,s3c2440-i2c";
 		reg = <0x12CA0000 0x100>;
 		interrupts = <0 60 0>;
 		#address-cells = <1>;
 		#size-cells = <0>;
 	};
 
-	i2c@12CB0000 {
+	i2c_5: i2c@12CB0000 {
 		compatible = "samsung,s3c2440-i2c";
 		reg = <0x12CB0000 0x100>;
 		interrupts = <0 61 0>;
 		#address-cells = <1>;
 		#size-cells = <0>;
 	};
 
-	i2c@12CC0000 {
+	i2c_6: i2c@12CC0000 {
 		compatible = "samsung,s3c2440-i2c";
 		reg = <0x12CC0000 0x100>;
 		interrupts = <0 62 0>;
 		#address-cells = <1>;
 		#size-cells = <0>;
 	};
 
-	i2c@12CD0000 {
+	i2c_7: i2c@12CD0000 {
 		compatible = "samsung,s3c2440-i2c";
 		reg = <0x12CD0000 0x100>;
 		interrupts = <0 63 0>;
 		#address-cells = <1>;
 		#size-cells = <0>;
 	};
 
-	i2c@12CE0000 {
+	i2c_8: i2c@12CE0000 {
 		compatible = "samsung,s3c2440-hdmiphy-i2c";
 		reg = <0x12CE0000 0x1000>;
 		interrupts = <0 64 0>;