arm64: dts: qcom: pm8998: Add a specific compatible for coincell chg

Add a PM8998-specific compatible to the coincell charger and keep the
PM8941 one as fallback.
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230214090849.2186370-3-konrad.dybcio@linaro.org

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

@@ -72,7 +72,7 @@ pm8998_temp: temp-alarm@2400 {
 		};
 
 		pm8998_coincell: charger@2800 {
-			compatible = "qcom,pm8941-coincell";
+			compatible = "qcom,pm8998-coincell", "qcom,pm8941-coincell";
 			reg = <0x2800>;
 
 			status = "disabled";