systemc: Add a warning about dont_initialize and cthreads.

Change-Id: I7cc3e571a7a63eed383ad7f897342a539318f961
Reviewed-on: https://gem5-review.googlesource.com/c/13321
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
1 file changed