stats: Un-empty the SPARC FS stats.txt file.

stats: Un-empty the SPARC FS stats.txt file.

This was emptied accidentally by the CL below. A lot of other files were too,
but those were eventually refilled.

    commit 62b6ff22ec1f90014b1d0fc778014bdb38cc09ce
    Author: Curtis Dunham <Curtis.Dunham@arm.com>
    Date:   Tue May 31 11:07:18 2016 +0100

        stats: update for snoop filter tweak

Change-Id: I34aefca51a92a6a98f6a8fdbdab7106cc1fff171
Reviewed-on: https://gem5-review.googlesource.com/2641
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>