base,dev,python: Rename Net namespace as networking

As part of recent decisions regarding namespace
naming conventions, all namespaces will be changed
to snake case.

::Net became ::networking.

Change-Id: I6a77e36c84918174104e507453d53dfe3cb52d35
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/45417
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
9 files changed