sim: Clocked object debug message updated for clarity

Change-Id: I5bbf36ef21ac14d9edf68ec6766d33f88e84d308
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/5729
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
1 file changed