[automerger skipped] fastbootd: reduce USB buffer size to 16K
am: 4472fdb4d0 -s ours
am skip reason: change_id Ic025bdd8e7a6cf2634fc24524fd189e0cc9efbb5 with SHA1 d747dba9c0 is in history

Change-Id: I7e707de1e46c1071ca7fef6f78f28061e0be5208