Change FIFO from using curTicks() to using timeTicks counter to avoid issues where multiple lines are considered to have entered the cache at the same tick. Change-Id: I5e0b894eb9bec4f0f8bc8f48ec2766a0fc5079c6 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/65952 Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br> Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com> Maintainer: Daniel Carvalho <odanrc@yahoo.com.br> Tested-by: kokoro <noreply+kokoro@google.com> Maintainer: Matt Sinclair <mattdsinclair@gmail.com>