Merge branch 'davinci_emac-read-the-MAC-address-from-nvmem'

Bartosz Golaszewski says:

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davinci_emac: read the MAC address from nvmem

This series is part of a bigger series that aims at removing the platform
data structure from the at24 EEPROM driver[1].

We provide a generalized version of of_get_nvmem_mac_address(), switch the
only user of the of_ variant to using it, remove the previous
implementation and use the new routine in the davinci_emac driver.

[1] https://lkml.org/lkml/2018/11/13/884


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Signed-off-by: David S. Miller <davem@davemloft.net>