macsec: introduce IEEE 802.1AE driver

macsec: introduce IEEE 802.1AE driver

This is an implementation of MACsec/IEEE 802.1AE.  This driver
provides authentication and encryption of traffic in a LAN, typically
with GCM-AES-128, and optional replay protection.

http://standards.ieee.org/getieee802/download/802.1AE-2006.pdf

Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit c09440f7dcb304002dfced8c0fea289eb25f2da0)

Orabug: 24614549

Signed-off-by: Ethan Zhao <ethan.zhao@oracle.com>
Conflicts:
	drivers/net/Kconfig

[dhaval.giani@oracle.com: Removed enabling uek kernel options]
Signed-off-by: Dhaval Giani <dhaval.giani@oracle.com>
 Conflicts:
	uek-rpm/ol6/config-sparc
	uek-rpm/ol6/config-sparc-debug
	uek-rpm/ol6/config-x86_64
	uek-rpm/ol6/config-x86_64-debug
	uek-rpm/ol7/config-sparc
	uek-rpm/ol7/config-x86_64
	uek-rpm/ol7/config-x86_64-debug