As part of recent decisions regarding namespace naming conventions, all namespaces will be changed to snake case. ::Linux became ::linux. Change-Id: I3c34790530464b42ded795ce5b78719387a79a00 Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/45418 Tested-by: kokoro <noreply+kokoro@google.com> Maintainer: Gabe Black <gabe.black@gmail.com> Reviewed-by: Hoa Nguyen <hoanguyen@ucdavis.edu>