ARM: dts: aspeed: tiogapass: Add sensors

Added ADC and other sensor devices present in the Facebook Tiogapass
machine.
Signed-off-by: Vijay Khemka <vijaykhemka@fb.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/boot/dts/aspeed-bmc-facebook-tiogapass.dts

@@ -21,6 +21,17 @@ chosen {
 	memory@80000000 {
 		reg = <0x80000000 0x20000000>;
 	};
+
+	iio-hwmon {
+		compatible = "iio-hwmon";
+		io-channels = <&adc 0>, <&adc 1>, <&adc 2>, <&adc 3>,
+					<&adc 4>, <&adc 5>, <&adc 6>;
+	};
+
+	iio-hwmon-battery {
+		compatible = "iio-hwmon";
+		io-channels = <&adc 7>;
+	};
 };
 
 &fmc {
@@ -76,6 +87,10 @@ &mac0 {
 	use-ncsi;
 };
 
+&adc {
+	status = "okay";
+};
+
 &i2c0 {
 	status = "okay";
 	//Airmax Conn B, CPU0 PIROM, CPU1 PIROM
@@ -134,6 +149,10 @@ &i2c7 {
 
 &i2c8 {
 	status = "okay";
+	tmp421@1f {
+		compatible = "ti,tmp421";
+		reg = <0x1f>;
+	};
 	//Mezz Sensor SMBus
 };
 
@@ -152,7 +171,7 @@ fan@0 {
 	};
 
 	fan@1 {
-		reg = <0x00>;
-		aspeed,fan-tach-ch = /bits/ 8 <0x01>;
+		reg = <0x01>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x02>;
 	};
 };