ARM: dts: qcom: Use labels with generic node names for ADC channels

A future bindings update will replace the free-form qcom,spmi-vadc and
qcom,spmi-adc5 channel node names with the specific name `channel`, to
be more consistent with how the driver parses the nodes and to match the
generic node name set in `iio/adc/adc.yaml`.

Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20230730-generic-adc-channels-v5-1-e6c69bda8034@somainline.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

Author: MarijnS95

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

@@ -102,27 +102,27 @@
 			#size-cells = <0>;
 			#io-channel-cells = <1>;
 
-			adc-chan@7 {
+			channel@7 {
 				reg = <VADC_VSYS>;
 				qcom,pre-scaling = <1 3>;
 				label = "vph_pwr";
 			};
-			adc-chan@8 {
+			channel@8 {
 				reg = <VADC_DIE_TEMP>;
 				label = "die_temp";
 			};
-			adc-chan@9 {
+			channel@9 {
 				reg = <VADC_REF_625MV>;
 				label = "ref_625mv";
 			};
-			adc-chan@a {
+			channel@a {
 				reg = <VADC_REF_1250MV>;
 				label = "ref_1250mv";
 			};
-			adc-chan@e {
+			channel@e {
 				reg = <VADC_GND_REF>;
 			};
-			adc-chan@f {
+			channel@f {
 				reg = <VADC_VDD_VADC>;
 			};
 		};

arch/arm/boot/dts/qcom/qcom-pm8941.dtsi

@@ -145,31 +145,31 @@
 			#io-channel-cells = <1>;
 
 
-			adc-chan@6 {
+			channel@6 {
 				reg = <VADC_VBAT_SNS>;
 			};
 
-			adc-chan@8 {
+			channel@8 {
 				reg = <VADC_DIE_TEMP>;
 			};
 
-			adc-chan@9 {
+			channel@9 {
 				reg = <VADC_REF_625MV>;
 			};
 
-			adc-chan@a {
+			channel@a {
 				reg = <VADC_REF_1250MV>;
 			};
 
-			adc-chan@e {
+			channel@e {
 				reg = <VADC_GND_REF>;
 			};
 
-			adc-chan@f {
+			channel@f {
 				reg = <VADC_VDD_VADC>;
 			};
 
-			adc-chan@30 {
+			channel@30 {
 				reg = <VADC_LR_MUX1_BAT_THERM>;
 			};
 		};

arch/arm/boot/dts/qcom/qcom-pma8084.dtsi

@@ -64,27 +64,27 @@
 			#size-cells = <0>;
 			#io-channel-cells = <1>;
 
-			adc-chan@8 {
+			channel@8 {
 				reg = <VADC_DIE_TEMP>;
 			};
 
-			adc-chan@9 {
+			channel@9 {
 				reg = <VADC_REF_625MV>;
 			};
 
-			adc-chan@a {
+			channel@a {
 				reg = <VADC_REF_1250MV>;
 			};
 
-			adc-chan@c {
+			channel@c {
 				reg = <VADC_SPARE1>;
 			};
 
-			adc-chan@e {
+			channel@e {
 				reg = <VADC_GND_REF>;
 			};
 
-			adc-chan@f {
+			channel@f {
 				reg = <VADC_VDD_VADC>;
 			};
 		};

arch/arm/boot/dts/qcom/qcom-pmx55.dtsi

@@ -40,25 +40,25 @@
 			#io-channel-cells = <1>;
 			interrupts = <0x8 0x31 0x0 IRQ_TYPE_EDGE_RISING>;
 
-			ref-gnd@0 {
+			channel@0 {
 				reg = <ADC5_REF_GND>;
 				qcom,pre-scaling = <1 1>;
 				label = "ref_gnd";
 			};
 
-			vref-1p25@1 {
+			channel@1 {
 				reg = <ADC5_1P25VREF>;
 				qcom,pre-scaling = <1 1>;
 				label = "vref_1p25";
 			};
 
-			die-temp@6 {
+			channel@6 {
 				reg = <ADC5_DIE_TEMP>;
 				qcom,pre-scaling = <1 1>;
 				label = "die_temp";
 			};
 
-			chg-temp@9 {
+			channel@9 {
 				reg = <ADC5_CHG_TEMP>;
 				qcom,pre-scaling = <1 1>;
 				label = "chg_temp";