arm64: dts: qcom: sdm845: remove macro from unit name

Unit name is supposed to be a number, using a macro with hex value is
not recommended, so add the value in unit name.

arch/arm64/boot/dts/qcom/pm8998.dtsi:81.18-84.6: Warning (unit_address_format): /soc/spmi@c440000/pmic@0/adc@3100/adc-chan@0x06: unit name should not have leading "0x"
arch/arm64/boot/dts/qcom/pm8998.dtsi:81.18-84.6: Warning (unit_address_format): /soc/spmi@c440000/pmic@0/adc@3100/adc-chan@0x06: unit name should not have leading 0s
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm64/boot/dts/qcom/pm8998.dtsi

@@ -78,7 +78,7 @@ pm8998_adc: adc@3100 {
 			#size-cells = <0>;
 			#io-channel-cells = <1>;
 
-			adc-chan@ADC5_DIE_TEMP {
+			adc-chan@6 {
 				reg = <ADC5_DIE_TEMP>;
 				label = "die_temp";
 			};