Merge branch 'xgene-next'

Keyur Chudgar says:

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drivers: net: xgene: Add second SGMII based 1G interface

This patch adds support for second SGMII based 1G interface.
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Signed-off-by: Keyur Chudgar <kchudgar@apm.com>
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>