Merge branch 'dwmac-oxnas-leaks'

Johan Hovold says:

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net: stmmac: dwmac-oxnas: fix leaks and simplify pm

These patches fixes of-node and fixed-phydev leaks in the recently added
dwmac-oxnas driver, and ultimately switches over to using the generic pm
implementation as the required callbacks are now in place.

Note that this series has only been compile tested.
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Signed-off-by: David S. Miller <davem@davemloft.net>