Merge branch 'selftests-drv-net-add-a-simple-tso-test'

Jakub Kicinski says:

====================
selftests: drv-net: add a simple TSO test

Add a simple test for exercising TSO over tunnels.

Similarly to csum test we want to iterate over ip versions.
Rework how addresses are stored in env to make this easier.
====================

Link: https://patch.msgid.link/20250218225426.77726-1-kuba@kernel.org


Signed-off-by: Jakub Kicinski <kuba@kernel.org>