ARM: dts: qcom: sdx55: Add Shared memory manager support

Add smem node to support shared memory manager on SDX55 platform.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20210106125322.61840-9-manivannan.sadhasivam@linaro.org
[bjorn: Moved smem node out from /soc]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm/boot/dts/qcom-sdx55.dtsi

@@ -106,6 +106,12 @@
 		};
 	};
 
+	smem {
+		compatible = "qcom,smem";
+		memory-region = <&smem_mem>;
+		hwlocks = <&tcsr_mutex 3>;
+	};
+
 	soc: soc {
 		#address-cells = <1>;
 		#size-cells = <1>;