arm64: dts: qcom: pm6150l: add missing adc channels

Add the missing adc channels and add pre-scaling property to die_temp
channel, as per downstream dts.
Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220812114614.1195679-1-luca.weiss@fairphone.com

arch/arm64/boot/dts/qcom/pm6150l.dtsi

@@ -20,10 +20,29 @@ pm6150l_adc: adc@3100 {
 			#size-cells = <0>;
 			#io-channel-cells = <1>;
 
+			adc-chan@0 {
+				reg = <ADC5_REF_GND>;
+				qcom,pre-scaling = <1 1>;
+				label = "ref_gnd";
+			};
+
+			adc-chan@1 {
+				reg = <ADC5_1P25VREF>;
+				qcom,pre-scaling = <1 1>;
+				label = "vref_1p25";
+			};
+
 			adc-chan@6 {
 				reg = <ADC5_DIE_TEMP>;
+				qcom,pre-scaling = <1 1>;
 				label = "die_temp";
 			};
+
+			adc-chan@83 {
+				reg = <ADC5_VPH_PWR>;
+				qcom,pre-scaling = <1 3>;
+				label = "vph_pwr";
+			};
 		};
 
 		pm6150l_adc_tm: adc-tm@3500 {