trace-cmd: Have timestamp offset set at cpu descriptor not record
trace-cmd: Have timestamp offset set at cpu descriptor not record

The cpu descriptor is referenced by many functions, and needs to include
the ts_offset, otherwise those functions will be incorrect. The record->ts
is based on the cpu descriptor timestamp, so by modifying the cpu timestamp
the record->ts is also modified.

Signed-off-by: Steven Rostedt <43232e92d70cc7aa53504ad0397085ee47bad87f@goodmis.org>

bigzz/trace-cmd,bigzz/trace-cmd