arm64: dts: qcom: pm8998: adjust coincell node name to bindings

The spmi-pmic bindings say that pm8941-coincell should be called
'charger'.
Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221031175119.939860-3-luca@z3ntu.xyz

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

@@ -63,7 +63,7 @@ pm8998_temp: temp-alarm@2400 {
 			#thermal-sensor-cells = <0>;
 		};
 
-		pm8998_coincell: coincell@2800 {
+		pm8998_coincell: charger@2800 {
 			compatible = "qcom,pm8941-coincell";
 			reg = <0x2800>;