ARM: dts: qcom: pm8226: add IADC node

Add a node for the current ADC (IADC) found in PM8226.

Signed-off-by: Rayyan Ansari <[e-mail]>
[bjorn: Updated node name and added specific compatible, per request from Luca Weiss]
Signed-off-by: Bjorn Andersson <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

arch/arm/boot/dts/qcom-pm8226.dtsi

···
 			};
 		};
 
+		pm8226_iadc: adc@3600 {
+			compatible = "qcom,pm8226-iadc", "qcom,spmi-iadc";
+			reg = <0x3600>;
+			interrupts = <0x0 0x36 0x0 IRQ_TYPE_EDGE_RISING>;
+		};
+
 		rtc@6000 {
 			compatible = "qcom,pm8941-rtc";
 			reg = <0x6000>, <0x6100>;