FROMLIST: arm64: dts: qcom: kodiak: increase fastrpc compute-cb session slots

Some workloads on Kodiak can exhaust FastRPC sessions when multiple
compute clients open contexts concurrently, leading to -EBUSY failures.

Describe the compute context bank with qcom,nsessions = <5> so the
driver can provision enough session slots for the compute-cb instance.

Link: https://lore.kernel.org/all/20260401073345.478-1-jianping.li@oss.qualcomm.com/
Signed-off-by: Jianping Li <jianping.li@oss.qualcomm.com>

Author: Jianping-Li

arch/arm64/boot/dts/qcom/sc7280.dtsi

@@ -4456,6 +4456,7 @@
 						compatible = "qcom,fastrpc-compute-cb";
 						reg = <5>;
 						iommus = <&apps_smmu 0x1805 0x0>;
+						qcom,nsessions = <5>;
 						dma-coherent;
 					};
 				};