Merge "Updates the FB_COMMAND_SIZE from 64 to the linux max value of 4096 and updates the relevant unit tests." am: a67092a7b8

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2214970

Change-Id: Ia04966a8e3895d1e9434a35e5d7d66f525b1cd13
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>