Gem5LinuxDevice: Added login_prompt and login_password_prompt parameters
Gem5LinuxDevice: Added login_prompt and login_password_prompt parameters

Added two parameters which allow the user to change the strings used
to match the login prompt and the following password prompt to match
their device configurations.

lisatn/workload-automation,Sticklyman1936/workload-automation,Sticklyman1936/workload-automation,bathepawan/workload-automation,jimboatarm/workload-automation,ARM-software/workload-automation,lisatn/workload-automation,bjackman/workload-automation,lisatn/workload-automation,setrofim/workload-automation,ep1cman/workload-automation,muendelezaji/workload-automation,setrofim/workload-automation,jimboatarm/workload-automation,muendelezaji/workload-automation,muendelezaji/workload-automation,ep1cman/workload-automation,bjackman/workload-automation,bjackman/workload-automation,jimboatarm/workload-automation,Sticklyman1936/workload-automation,ep1cman/workload-automation,chase-qi/workload-automation,bjackman/workload-automation,Sticklyman1936/workload-automation,bathepawan/workload-automation,ep1cman/workload-automation,bathepawan/workload-automation,ARM-software/workload-automation,muendelezaji/workload-automation,chase-qi/workload-automation,jimboatarm/workload-automation,jimboatarm/workload-automation,ep1cman/workload-automation,Sticklyman1936/workload-automation,chase-qi/workload-automation,ARM-software/workload-automation,bathepawan/workload-automation,bathepawan/workload-automation,bjackman/workload-automation,chase-qi/workload-automation,bjackman/workload-automation,chase-qi/workload-automation,setrofim/workload-automation,ARM-software/workload-automation,Sticklyman1936/workload-automation,lisatn/workload-automation,muendelezaji/workload-automation,jimboatarm/workload-automation,muendelezaji/workload-automation,setrofim/workload-automation,bathepawan/workload-automation,chase-qi/workload-automation,ep1cman/workload-automation