arm64: dts: qcom: msm8994-msft-lumia-octagon: add PM8994 pin properties

The bindings require that every pin configuration comes with 'function'
property.  There is also no 'drive-strength' property but
'qcom,drive-strength':

  msm8994-msft-lumia-octagon-cityman.dtb: gpios@c000: amsel-high-state: 'oneOf' conditional failed, one must be fixed:
    'drive-strength' does not match any of the regexes: 'pinctrl-[0-9]+'
    'bias-pull-up', 'drive-strength', 'function', 'pins' do not match any of the regexes: '(pinconf|-pins)$', 'pinctrl-[0-9]+'
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220507194913.261121-9-krzysztof.kozlowski@linaro.org

arch/arm64/boot/dts/qcom/msm8994-msft-lumia-octagon.dtsi

@@ -521,19 +521,22 @@ &pmi8994_gpios {
 	 */
 	hd3ss460_pol: pol-low-state {
 		pins = "gpio8";
-		drive-strength = <3>;
+		function = PMIC_GPIO_FUNC_NORMAL;
+		qcom,drive-strength = <3>;
 		bias-pull-down;
 	};
 
 	hd3ss460_amsel: amsel-high-state {
 		pins = "gpio9";
-		drive-strength = <1>;
+		function = PMIC_GPIO_FUNC_NORMAL;
+		qcom,drive-strength = <1>;
 		bias-pull-up;
 	};
 
 	hd3ss460_en: en-high-state {
 		pins = "gpio10";
-		drive-strength = <1>;
+		function = PMIC_GPIO_FUNC_NORMAL;
+		qcom,drive-strength = <1>;
 		bias-pull-up;
 	};
 };