perf script python: Add the 'ins_lat' field to event handler

For example, when using the Alder Lake PMU memory load event, the
instruction latency is stored in 'ins_lat', while the cache latency
is stored in 'weight'.

This patch reports the 'ins_lat' field for Python scripting.

Committer testing:

On a Rocket Lake Refresh Intel machine (14th gen):

  root@number:~# grep -m1 'model name' /proc/cpuinfo
  model name	: Intel(R) Core(TM) i7-14700K
  root@number:~# perf mem record -a sleep 5
  Memory events are enabled on a subset of CPUs: 16-27
  [ perf record: Woken up 85 times to write data ]
  [ perf record: Captured and wrote 41.236 MB perf.data (191390 samples) ]
  root@number:~# perf evlist -v
  cpu_atom/mem-loads,ldlat=30/P: type: 10 (cpu_atom), size: 136, config: 0x5d0 (mem-loads), { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|ADDR|CPU|PERIOD|IDENTIFIER|DATA_SRC|WEIGHT_STRUCT, read_format: ID|LOST, disabled: 1, inherit: 1, freq: 1, precise_ip: 3, sample_id_all: 1, { bp_addr, config1 }: 0x1f
  cpu_atom/mem-stores/P: type: 10 (cpu_atom), size: 136, config: 0x6d0 (mem-stores), { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|ADDR|CPU|PERIOD|IDENTIFIER|DATA_SRC|WEIGHT_STRUCT, read_format: ID|LOST, disabled: 1, inherit: 1, freq: 1, precise_ip: 3, sample_id_all: 1
  dummy:u: type: 1 (software), size: 136, config: 0x9 (PERF_COUNT_SW_DUMMY), { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|ADDR|CPU|IDENTIFIER|DATA_SRC|WEIGHT_STRUCT, read_format: ID|LOST, inherit: 1, exclude_kernel: 1, exclude_hv: 1, mmap: 1, comm: 1, task: 1, mmap_data: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, bpf_event: 1
  root@number:~#

Now generate a python script to then dump the dictionary that now needs
to have that 'ins_lat' field:

  root@number:~# perf script --gen python
  generated Python script: perf-script.py
  root@number:~# vim perf-script.py
  root@number:~# perf script -s perf-script.py | head -40
  in trace_begin
  in trace_end
  root@number:~# vim perf-script.py

Reviewed-by: Adrian Hunter <[email protected]>
Signed-off-by: Zixian Cai <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Ben Gainey <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paran Lee <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

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