arm64: dts: qcom: sc8280xp-pmics: Add PMK8280 ADC7 block

Add support for ADC7 block available in PMK8280 for reading the
temperature via the AMUX pins.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221103095810.64606-6-manivannan.sadhasivam@linaro.org

arch/arm64/boot/dts/qcom/sc8280xp-pmics.dtsi

@@ -75,6 +75,16 @@ pmk8280_pon_resin: resin {
 				status = "disabled";
 			};
 		};
+
+		pmk8280_vadc: adc@3100 {
+			compatible = "qcom,spmi-adc7";
+			reg = <0x3100>;
+			interrupts = <0x0 0x31 0x0 IRQ_TYPE_EDGE_RISING>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			#io-channel-cells = <1>;
+			status = "disabled";
+		};
 	};
 
 	pmc8280_1: pmic@1 {