perf lock: Add -F/--field option to control output

The -F/--field option is to customize the list of fields to output:

  $ perf lock report -F contended,wait_max -k avg_wait
                  Name  contended   max wait (ns)   avg wait (ns)

        slock-AF_INET6          1           23543           23543
     &lruvec->lru_lock          5           18317           11254
        slock-AF_INET6          1           10379           10379
            rcu_node_1          1            2104            2104
   &dentry->d_lockr...          1            1844            1844
   &dentry->d_lockr...          1            1672            1672
      &newf->file_lock         15            2279            1025
   &dentry->d_lockr...          1             792             792

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220323230259.288494-3-namhyung@kernel.org


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