Merge branch 'net-add-and-use-dev_get_tstats64'

Heiner Kallweit says:

====================
net: add and use dev_get_tstats64

It's a frequent pattern to use netdev->stats for the less frequently
accessed counters and per-cpu counters for the frequently accessed
counters (rx/tx bytes/packets). Add a default ndo_get_stats64()
implementation for this use case. Subsequently switch more drivers
to use this pattern.

v2:
- add patches for replacing ip_tunnel_get_stats64
  Requested additional migrations will come in a separate series.

v3:
- add atomic_long_t member rx_frame_errors in patch 3 for making
  counter updates atomic
====================

Link: https://lore.kernel.org/r/99273e2f-c218-cd19-916e-9161d8ad8c56@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>