Try to recover corrupted ext4 /data with backup superblock am: 4e864e12 am: 1cda1bb8 am: 2f5e5321

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/core/+/11835152

Change-Id: I1a7f312585c19eef67f91d77aacd00a25bc1d7d1