arm64: dts: qcom: pm7250b: Use correct node name for gpios

Use gpio@ instead of pinctrl@ as that's the name expected by the
qcom,spmi-pmic.yaml schema. Update it to fix dt validation.
Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20231002-pm7250b-gpio-fixup-v2-2-debb8b599989@fairphone.comSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/pm7250b.dtsi

@@ -148,7 +148,7 @@ pm7250b_adc_tm: adc-tm@3500 {
 			status = "disabled";
 		};
 
-		pm7250b_gpios: pinctrl@c000 {
+		pm7250b_gpios: gpio@c000 {
 			compatible = "qcom,pm7250b-gpio", "qcom,spmi-gpio";
 			reg = <0xc000>;
 			gpio-controller;