configs: Allow for second disk in GPUFS

Connect the --second-disk option in GPUFS. Typically this is used as a
benchmarks disk image. If the disk is unmounted at the time of
checkpoint, a new disk image can be mounted after restoring the
checkpoint for a simple way to add new benchmarks without recreating a
checkpoint.

Change-Id: I57b31bdf8ec628006d774feacff3fde6f533cd4b
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/53071
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
1 file changed