arm64: dts: qcom: sm8150: add compatible fallback to mailbox

SC8150 mailbox is compatible with SDM845.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230322174148.810938-12-krzysztof.kozlowski@linaro.org

arch/arm64/boot/dts/qcom/sm8150.dtsi

@@ -4124,7 +4124,8 @@ intc: interrupt-controller@17a00000 {
 		};
 
 		apss_shared: mailbox@17c00000 {
-			compatible = "qcom,sm8150-apss-shared";
+			compatible = "qcom,sm8150-apss-shared",
+				     "qcom,sdm845-apss-shared";
 			reg = <0x0 0x17c00000 0x0 0x1000>;
 			#mbox-cells = <1>;
 		};