ARM: shmobile: Lager: Correct I2C bus for VDD MPU regulator

I2C bus for VDD MPU regulator is IIC3, not I2C3.
Signed-off-by: Khiem Nguyen <khiem.nguyen.xt@renesas.com>
Reviewed-by: Wolfram Sang <wsa@sang-engineering.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7790-lager.dts

@@ -215,9 +215,9 @@ i2c2_pins: i2c2 {
 		renesas,function = "i2c2";
 	};
 
-	i2c3_pins: i2c3 {
-		renesas,groups = "i2c3";
-		renesas,function = "i2c3";
+	iic3_pins: iic3 {
+		renesas,groups = "iic3";
+		renesas,function = "iic3";
 	};
 
 	usb0_pins: usb0 {
@@ -368,9 +368,9 @@ &i2c2	{
 	pinctrl-names = "default";
 };
 
-&i2c3 {
+&iic3 {
 	pinctrl-names = "default";
-	pinctrl-0 = <&i2c3_pins>;
+	pinctrl-0 = <&iic3_pins>;
 	status = "okay";
 
 	vdd_dvfs: regulator@68 {