redhat/configs: Clean up x86-64 call depth tracking configs
In both configs/fedora and config/rhel, CONFIG_CALL_DEPTH_TRACKING=y and CONFIG_CALL_THUNKS_DEBUG=n. So they can be moved to the common directory. Since these are x86-64 specific configs, they should be under common/generic/x86.
Signed-off-by: Waiman Long longman@redhat.com