ARM: dts: Add ADC and themistor nodes for exynos4412-trats2

This patch use ADC to get the temperature of SoC/battery by using NTC thermistor
driver in hwmon. NTC thermistor driver covnvert ADC's raw data to temperature
by using following variables:
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

arch/arm/boot/dts/exynos4412-trats2.dts

@@ -106,6 +106,11 @@
 		};
 	};
 
+	adc: adc@126C0000 {
+		vdd-supply = <&ldo3_reg>;
+		status = "okay";
+	};
+
 	i2c@13890000 {
 		samsung,i2c-sda-delay = <100>;
 		samsung,i2c-slave-addr = <0x10>;
@@ -589,4 +594,20 @@
 			};
 		};
 	};
+
+	thermistor-ap@0 {
+		compatible = "ntc,ncp15wb473";
+		pullup-uv = <1800000>;	 /* VCC_1.8V_AP */
+		pullup-ohm = <100000>;	 /* 100K */
+		pulldown-ohm = <100000>; /* 100K */
+		io-channels = <&adc 1>;  /* AP temperature */
+	};
+
+	thermistor-battery@1 {
+		compatible = "ntc,ncp15wb473";
+		pullup-uv = <1800000>;	 /* VCC_1.8V_AP */
+		pullup-ohm = <100000>;	 /* 100K */
+		pulldown-ohm = <100000>; /* 100K */
+		io-channels = <&adc 2>;  /* Battery temperature */
+	};
 };