sim: Switch from EventWrapper to MemberEventWrapper before deprec

Change-Id: I25c81787d522a0dd063112b6727669da46e0f0e7
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/67655
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Tested-by: kokoro <noreply+kokoro@google.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
10 files changed