simpleperf: Fix event type for Intel Atom CPU

As shown in
https://github.com/torvalds/linux/blob/master/arch/x86/events/core.c#L2173,
Atom CPU uses a new event type instead of PERF_TYPE_RAW.

Bug: 345410289
Test: run simpleperf manually
Change-Id: I564fc821ce96063de0b4ff53fcf3171457d31c91
3 files changed