Merge branch 'net-dsa-microchip-Further-regmap-cleanups'

Marek Vasut says:

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net: dsa: microchip: Further regmap cleanups

This patchset cleans up KSZ9477 switch driver by replacing various
ad-hoc polling implementations and register RMW with regmap functions.

Each polling function is replaced separately to make it easier to review
and possibly bisect, but maybe the patches can be squashed.
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Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>