arm64: dts: qcom: msm8998-oneplus-common: enable RRADC

Enable the Round Robin ADC for the OnePlus 5/5T.
Signed-off-by: Jami Kettunen <jami.kettunen@somainline.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221016180330.1912214-6-caleb.connolly@linaro.org

arch/arm64/boot/dts/qcom/msm8998-oneplus-common.dtsi

@@ -279,6 +279,10 @@ vol_keys_default: vol-keys-state {
 	};
 };
 
+&pmi8998_rradc {
+	status = "okay";
+};
+
 &qusb2phy {
 	status = "okay";