perf record: Fix error message for --filter option not coming after tracepoint

  [root@zoo ~]# perf record --filter "common_pid != PERF_PID" -a
  -F option should follow a -e tracepoint option.

The -F option is for --freq, not --filter. Fix it up to show:

  [root@zoo ~]# perf record --filter "common_pid != PERF_PID" -a
  --filter option should follow a -e tracepoint option

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-z0yrm8stn9w3423nkov3eksg@git.kernel.org


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>