ARM: dts: qcom: pmx65: add fallback compatible to PMIC GPIO

The bindings require all PMIC GPIO nodes to have two compatibles -
specific followed by SPMI or SSBI fallback.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Bjorn Andersson <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

arch/arm/boot/dts/qcom-pmx65.dtsi

···
 		};
 
 		pmx65_gpios: pinctrl@8800 {
-			compatible = "qcom,pmx65-gpio";
+			compatible = "qcom,pmx65-gpio", "qcom,spmi-gpio";
 			reg = <0x8800>;
 			gpio-controller;
 			#gpio-cells = <2>;