trace-cmd read: Fix --boundary option
trace-cmd read: Fix --boundary option

The boundary option would only show boundaries for CPU 0, because
the boundary check looked at a hard coded CPU 0 page.

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

bigzz/trace-cmd,bigzz/trace-cmd