tracing: Pass trace_array to flag_changed callback

As options (flags) may affect instances instead of being global
the flag_changed() callbacks need to receive the trace_array descriptor
of the instance they will be modifying.

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

diff --cc kernel/trace/trace.c
Simple merge

diff --cc kernel/trace/trace.h
Simple merge

diff --cc kernel/trace/trace_irqsoff.c
Simple merge

diff --cc kernel/trace/trace_sched_wakeup.c
Simple merge