nfp: update Agilio SmartNIC firmware to rev 2.1.13

New in this release:
  - SR-IOV VEB support
  - Zero-copy multicast
  - Host to host checksum offload
  - Offload inner checksums over VXLAN
  - TSO over VXLAN tunnels
  - RSS over VXLAN and GRE
  - eBPF programmable RSS
  - PCIe performance enhancements
  - Maintain per queue statistics
  - Report core clock frequency to driver

Resolved bugs:
  - Unreliable link state managment when reloading firmware
  - Incorrect MAC discard statistics
  - Broken RSS remapping in port breakout modes
  - Inappropriately dropped malformed packets

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>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>