Merge branch 'dpaa2-mac-various-updates'

Ioana Ciornei says:

====================
dpaa2-mac: various updates

The first two patches of this series extends the MAC statistics support
to also work for network interfaces which have their link status handled
by firmware (TYPE_FIXED).

The next two patches are fixing a sporadic problem which happens when
the connected DPMAC object is not yet discovered by the fsl-mc bus, thus
the dpaa2-eth is not able to get a reference to it. A referred probe
will be requested in this case.

Finally, the last two patches make some cosmetic changes, mostly
removing comments and unnecessary checks.

Changes in v2:
 - replaced IS_ERR_OR_NULL() by IS_ERR() in patch 4/6
 - reworded the commit message of patch 6/6
====================

Link: https://lore.kernel.org/r/20210108090727.866283-1-ciorneiioana@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>