Merge branch 'net-dsa-ksz-Add-Microchip-KSZ87xx-support'

Marek Vasut says:

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net: dsa: ksz: Add Microchip KSZ87xx support

This series adds support for Microchip KSZ87xx switches, which are
slightly simpler compared to KSZ9xxx .
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Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>