qed/qede: Add VXLAN tunnel slowpath configuration support

qed/qede: Add VXLAN tunnel slowpath configuration support

This patch enables VXLAN tunnel on the adapter and
add support for driver hooks to configure UDP ports
for VXLAN tunnel offload to be performed by the adapter.

Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Orabug: 23732603
Signed-off-by: Manjunath Govindashetty <manjunath.govindashetty@oracle.com>