Merge "fastbootd: Add better logging for flashing failures." am: a0904183

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2114494



Change-Id: I5df6e04eeb6b937e634714160e1ae17678e03faf
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>