arm64: dts: qcom: sc8280xp-pmics: Define adc for temp-alarms

sc8280xp-pmics define the two thermal zones "pm8280-1-thermal" and
"pm8280-2-thermal", but the related temp-alarm instances are not tied to
any adc channels, and as such continuously report the bogus temperature
of 37C.

After previously defining these adc channels across all boards using
sc8280xp-pmics.dtsi, we can now add these references.

This does however mean that we have a non-disabled node referencing
default-disabled nodes, requiring each board to enable the pmk8280_vadc.
Avoid this by marking pmk8280_vadc okay.
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240210-sc8280xp-pmic-thermal-v1-2-a1c215a17d10@quicinc.comSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/sc8280xp-crd.dts

@@ -604,10 +604,6 @@ rtc_offset: rtc-offset@bc {
 	};
 };
 
-&pmk8280_vadc {
-	status = "okay";
-};
-
 &qup0 {
 	status = "okay";
 };

arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts

@@ -851,8 +851,6 @@ rtc_offset: rtc-offset@bc {
 };
 
 &pmk8280_vadc {
-	status = "okay";
-
 	channel@144 {
 		reg = <PM8350_ADC7_AMUX_THM1_100K_PU(1)>;
 		qcom,hw-settle-time = <200>;

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

@@ -87,7 +87,6 @@ pmk8280_vadc: adc@3100 {
 			#address-cells = <1>;
 			#size-cells = <0>;
 			#io-channel-cells = <1>;
-			status = "disabled";
 
 			channel@3 {
 				reg = <PMK8350_ADC7_DIE_TEMP>;
@@ -160,6 +159,8 @@ pm8280_1_temp_alarm: temp-alarm@a00 {
 			compatible = "qcom,spmi-temp-alarm";
 			reg = <0xa00>;
 			interrupts-extended = <&spmi_bus 0x1 0xa 0x0 IRQ_TYPE_EDGE_BOTH>;
+			io-channels = <&pmk8280_vadc PM8350_ADC7_DIE_TEMP(1)>;
+			io-channel-names = "thermal";
 			#thermal-sensor-cells = <0>;
 		};
 
@@ -212,6 +213,8 @@ pm8280_2_temp_alarm: temp-alarm@a00 {
 			compatible = "qcom,spmi-temp-alarm";
 			reg = <0xa00>;
 			interrupts-extended = <&spmi_bus 0x2 0xa 0x0 IRQ_TYPE_EDGE_BOTH>;
+			io-channels = <&pmk8280_vadc PM8350_ADC7_DIE_TEMP(3)>;
+			io-channel-names = "thermal";
 			#thermal-sensor-cells = <0>;
 		};