workloads/memcpy: Adds once decorators to workload
workloads/memcpy: Adds once decorators to workload

Ensure that the binary is only installed and uninstalled only once for
this workload.

ARM-software/workload-automation,setrofim/workload-automation,lisatn/workload-automation,lisatn/workload-automation,ARM-software/workload-automation,setrofim/workload-automation,ARM-software/workload-automation,lisatn/workload-automation,ARM-software/workload-automation,setrofim/workload-automation,setrofim/workload-automation,lisatn/workload-automation