perf trace: Move flock op beautifier to tools/perf/trace/beauty/

To reduce the size of builtin-trace.c.

Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/n/tip-c4c47w2a2jx13terl2p2hros@git.kernel.org


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