arm64: dts: qcom: pm8550: drop PWM address/size cells

The address/size cells in PWM node are needed only if individual LEDs
are listed.  If multi-led is used, then this leads to dtc W=1 warnings:

  pm8550.dtsi:65.19-73.5: Warning (avoid_unnecessary_addr_size): /soc@0/spmi@c400000/pmic@1/pwm:
    unnecessary #address-cells/#size-cells without "ranges" or child "reg" property
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20231208124332.48636-1-krzysztof.kozlowski@linaro.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/pm8550.dtsi

@@ -64,9 +64,6 @@ pm8550_flash: led-controller@ee00 {
 
 		pm8550_pwm: pwm {
 			compatible = "qcom,pm8550-pwm", "qcom,pm8350c-pwm";
-
-			#address-cells = <1>;
-			#size-cells = <0>;
 			#pwm-cells = <2>;
 
 			status = "disabled";