Merge branch 'sonic-ethernet-cleanups'

Finn Thain says:

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Fixes, cleanup and modernization for SONIC ethernet drivers

Changes since v4 of combined patch series:
- Removed redundant and non-portable MACH_IS_MAC tests.
- Omitted patches unrelated to SONIC drivers.
- Dropped changes to the 'version_printed' logic and debug message text.
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Signed-off-by: David S. Miller <davem@davemloft.net>