Merge branch 'update-register-bit-definitions-in-the-etheravb-driver'

Sergey Shtylyov says:

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Update register/bit definitions in the EtherAVB driver

Here are 2 patches against DaveM's 'net-next' repo.
I'm updating the driver to match the recent R-Car gen2/3 manuals.
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Link: https://lore.kernel.org/r/6aef8856-4bf5-1512-2ad4-62af05f00cc6@omprussia.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>