cpu-o3: Fix missing overrides
cpu-o3: Fix missing overrides

Fix missing overrides in SimpleTrace.

Change-Id: I82ed2a10c98ea67dde7b99db13c0ad5d9ed96f0f
Signed-off-by: Daniel R. Carvalho <91779fc734d358d9575ec4910de29bfcbcaf1b22@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/44405
Reviewed-by: Giacomo Travaglini <8eef13a4f970e2e9372c8d26ad0737b760f99c02@arm.com>
Maintainer: Giacomo Travaglini <8eef13a4f970e2e9372c8d26ad0737b760f99c02@arm.com>
Tested-by: kokoro <2ac7b1f3fa578934c95181d4272be0d3bca00121@google.com>

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