arm64:dts: Enable acc and temp sensor for pConXS

arch/arm64/boot/dts/seconorth/pconxs.dtsi

@@ -210,6 +210,21 @@ cap_touch: cap_touch_controller@0{
 };
 #endif
 
+&i2c1 {
+	accelerometer@19
+	{
+		compatible = "st,lis2dh12-accel";
+		reg = <0x19>;
+		status = "okay";
+	};
+
+	thermometer@4e {
+		compatible = "national,lm75b";
+		reg = <0x4e>;
+		status = "okay";
+	};
+};
+
 &i2c2 {
 	rtc@51 {
 		compatible = "nxp,pcf8563";