Merge branch 'net-macb-few-code-cleanups'

Claudiu Beznea says:

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net: macb: few code cleanups

Patches in this series cleanup a bit macb code.

Changes in v2:
- in patch 2/4 use hweight32() instead of hweight_long()
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Signed-off-by: David S. Miller <davem@davemloft.net>