fastmodel: follow .sgproj SIMGEN_COMMAND_LINE

ARM's .sgproj has SIMGEN_COMMAND_LINE to be fed into simgen when
running. However, simgen itself doesn't parse that option and apply. We
need to parse it by ourself and pass the arg to simgen when invoking.

Change-Id: I43b131a1ca9f98891ab390de583589a710e7c812
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/60369
Maintainer: Gabe Black <gabe.black@gmail.com>
Reviewed-by: Gabe Black <gabe.black@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
1 file changed