Update libpfm4 to commit 2570fe #496

Job	Run time
papi_clang_analysis	4m 26s
papi_component_nvidia (cuda, yes)	55s
papi_component_amd (rocm, yes)	7m 2s
papi_component_nvidia (cuda, no)	48s
papi_component_amd (rocm, no)	5m 25s
papi_component (perf_event, yes)	8m 3s
papi_spack	10m 0s
papi_component_nvidia (nvml, yes)	6m 23s
papi_component_amd (rocm_smi, yes)	6m 22s
papi_component (perf_event, no)	6m 59s
papi_component_nvidia (nvml, no)	5m 47s
papi_component_amd (rocm_smi, no)	5m 11s
papi_component (lmsensors, yes)	8m 10s
papi_component (lmsensors, no)	6m 29s
papi_component (io, yes)	8m 4s
papi_component (io, no)	6m 40s
papi_component (net, yes)	7m 25s
papi_component (net, no)	6m 31s
papi_component (powercap, yes)	10m 48s
papi_component (powercap, no)	9m 46s
papi_component (appio, yes)	7m 54s
papi_component (appio, no)	6m 41s
papi_component (coretemp, yes)	7m 50s
papi_component (coretemp, no)	6m 35s
papi_component (stealtime, yes)	7m 39s
papi_component (stealtime, no)	6m 48s
	2h 54m 41s

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