Upgrade f2fs-tools to efcff4bc169fbcb7276769ab0ad5444b1df33a70 am: 5547d4cec1

Original change: https://android-review.googlesource.com/c/platform/external/f2fs-tools/+/2995036

Change-Id: Icd40b69259ec51d5ff05162ba8309b3089d44d55
Signed-off-by: Automerger Merge Worker <[email protected]>