tests: Update x86 system.py for MemCtrl interface

Change-Id: If4103b197720f74df70d0a24602e2b3715936826
Signed-off-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34315
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Reviewed-by: mike upton <michaelupton@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
1 file changed