Merge "Ueventd: Fix a corner case in ReadUevent() that triggers duplicate firmware loading." am: e122701142 am: 578bfe9497

Original change: https://android-review.googlesource.com/c/platform/system/core/+/1366617

Change-Id: Ib5c868d1da20fdcb8b0b0642eba7c707abb1ea1e