i40e: Move all UDP port notifiers to single function

i40e: Move all UDP port notifiers to single function

Orabug: 24568124

This patch goes through and combines the notifiers for VXLAN and GENEVE
into a single function for each action.  So there is now one combined
function for getting ports, one for adding the ports, and one for deleting
the ports.

Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 06a5f7f167c53d4116c3b13912d082f4116a620f)
Signed-off-by: Brian Maly <brian.maly@oracle.com>
Conflicts:
	drivers/net/ethernet/intel/Kconfig
	drivers/net/ethernet/intel/i40e/i40e_main.c

Signed-off-by: Dhaval Giani <dhaval.giani@oracle.com>