qede: Loopback implementation should ignore the normal traffic

qede: Loopback implementation should ignore the normal traffic

Orabug: 25477939

During the execution of loopback test, driver may receive the packets which
are not originated by this test, loopback implementation need to skip those
packets.

Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 837d4eb6ed7cb0341079fac97e3037df6bef7482)
Signed-off-by: Brian Maly <brian.maly@oracle.com>