Merge "Attempt to run mkbootimg_test as part of unit tests CI" am: 45e0eea0dc am: d19d0b9dae am: 6329cde2af am: 0691fd1fef

Original change: https://android-review.googlesource.com/c/platform/system/tools/mkbootimg/+/1664783

Change-Id: Iafaa957a7065b090e490485c19f6a1e8ec4217ee