net: phy: marvell: Add errata section 5.1 for Alaska PHY

As per Errata Section 5.1, if EEE is intended to be used, some register
writes must be done once after every hardware reset. This patch now adds
the necessary register writes as listed in the Marvell errata.

Without this fix we experience ethernet problems on some of our boards
equipped with a new version of this ethernet PHY (different supplier).

The fix applies to Marvell Alaska 88E1510/88E1518/88E1512/88E1514
Rev. A0.

Signed-off-by: Leszek Polak <[email protected]>
Signed-off-by: Stefan Roese <[email protected]>
Cc: Marek Behún <[email protected]>
Cc: Andrew Lunn <[email protected]>
Cc: Heiner Kallweit <[email protected]>
Cc: Russell King <[email protected]>
Cc: David S. Miller <[email protected]>
Reviewed-by: Marek Behún <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Paolo Abeni <[email protected]>

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