configs: Add python3 workarounds in read_config

Change-Id: Ib065f41b87e5ada9535b9c2645067162aa69234b
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/19150
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
Tested-by: kokoro <noreply+kokoro@google.com>
1 file changed