net: macsec: allow multiple macsec devices with offload

Offload engine can setup several SecY. Each macsec interface shall have
its own mac address. It will filter a traffic by dest mac address.

Change-Id: Ic0e971c8061eb7ce74e1ddab4b76374571da5a8c
Signed-off-by: Dmitry Bogdanov <dbogdanov@marvell.com>
Signed-off-by: Mark Starovoytov <mstarovoitov@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Git-commit: A249f8050624f92f844605274de3367e2c8ac706
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: Karthik Rudrapatna <quic_krudrapa@quicinc.com>