nfp: update Agilio SmartNIC firmware to rev 2.1.16

nfp: update Agilio SmartNIC firmware to rev 2.1.16

Very late testing of the previous firmware revealed that some VFs were
locked out due to a multicast bug. The issue is resolved in this firmware.

Signed-off-by: Ciaran Toal <ciaran.toal@netronome.com>
Signed-off-by: Edwin Peer <edwin.peer@netronome.com>
Signed-off-by: Nic Viljoen <nick.viljoen@netronome.com>
Tested-by: Brendan Galloway <brendan.galloway@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>