gem5: ./run -l works for fs_bigLITTLE.py

When you remove something from the README because it became obvious
through automation, that is a good thing.

common

@@ -142,6 +142,7 @@ common_root_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 common_arch=x86_64
 common_gem5=false
 common_gem5_build_type=opt
+common_gem5_cpt_pref='^cpt\.'
 common_gem5_variant=default
 common_gem5_worktree=
 common_linux_variant=default