[automerger skipped] simpleperf: add class interface to read elf files. am: ba4e42a893 -s ours

am skip reason: Change-Id Ia424926d112cbcd9970f11ffa56d047ff6df7872 with SHA-1 02e2033f9e is in history

Change-Id: Iaa797e49eca99a529c2aabf79a01df44637f6db2